無料で使えるLetsViewのベスト5代替アプリ

更新済み

LetsViewのような無料の画面ミラーリングアプリをお探しなら、独自の機能と強みを持つ5つの評価の良い代替アプリをご紹介します。ぜひご覧ください!


第1の選択肢 – Deskln

DeskInは、安定した高性能で知られる効率的なリモート接続と画面管理に特化したツールです。


強み:

  • 無料版は2K画質対応、クリアでロスレス

  • フレームレート、解像度、比率を調整可能で、さまざまな画面に柔軟に適応

  • 複数の投影方法をサポート(ワイヤレスミラーリング、QRコードスキャンによる画面転送)、同じネットワークにする必要なし。

  • システム互換性が高く、Windows、Mac、iOS、Androidで利用可能

  • ファイル転送、画面拡張、リモートコントロールなどの追加機能を提供

短所:

  • Google TVは未対応


ApowerMirror

ApowerMirrorは、双方向制御と多シナリオでの使用にフォーカスした包括的な画面ミラーリングソフトウェアです。


強み:

  • 無料版で720p画質(ウォーターマーク付き)をサポート、基本的なニーズに対応

  • 携帯電話とコンピューター間で画面をキャストすることが可能。

  • 追加機能(画面録画、スクリーンショットなど)を提供しており、チュートリアル作成やコンテンツ共有に適しています

短所:

  • 画質やフレームレートなどを調整できない。

  • 無料版にはウォーターマークがある

  • クロスプラットフォームの無料投影に時間制限がある

  • 無料版では1画面にのみミラーリング対応

  • 無料版では音声のキャストをサポートしない

Vysor


Vysorは開発者向けに設計されたシンプルで使いやすい画面ミラーリングツールです。


強み:

  • 無料版で基本的なミラーリング機能が利用可能。

  • 特別なアプリをインストールする必要がなく、ブラウザを通じて使用可能。

短所:

  • 無料版は画像品質が低い

  • iOSデバイスでは未対応

AirDroid Cast

AirDroid Castは、チーム向けのマルチデバイス接続とリモートコントロールに特化したツールです。


強み:

  • ブラウザ経由で画面ミラーリングが可能。

  • LANおよびインターネット経由で迅速な接続。

  • 複数のAndroidデバイスの画面を1台のPCに共有可能


短所:

  • 無料版は画像品質が低い

  • クロスプラットフォームコントロールは有料機能

iMyFone MirrorTo

iMyFone MirrorToは、マルチプラットフォームの投影ニーズに合わせて設計され、操作が直感的な強力なミラーリングツールです。

強み:

  • 複数のモバイルデバイスの接続と投影をサポート。

  • モバイルコードのスキャン、USBデータケーブル、Wi-Fiなどの方法で画面をコンピューターに投影し、数秒で音声を同期可能。

  • 外見スキンの切り替えをサポート

短所:

  • 無料版なし

  • モバイルからコンピューターへの投影のみ対応。他のソフトをインストールすればコンピューターの画面を投影可能。

5つの画面ミラーリングツールの比較:

Desklnを使用した画面ミラーリング方法

まず、画面をキャストするデバイスにDeskInをインストールし、無料アカウントを登録してログインします。

注意: 新しいデバイスから初めてログインする場合、登録メールでの確認が必要です。


方法1:パソコン画面のミラーリング

DeskInクライアントの「デバイスリスト」で画面をキャストしたいデバイスを見つけ、「画面管理」をクリックするだけで画面をミラーリングできます。

方法2:QRコードをスキャンして電話の画面をキャスト

携帯でDeskInにログインし、メインインターフェースの右上にあるスキャンアイコンをクリックして、画面をキャストしたいデバイスの「画面管理」にあるQRコードをスキャンします。

まとめ

上記の5つの無料ソフトはいずれも、安定かつ効率的な画面ミラーリング体験を提供し、LetsView の優れた代替手段となります。もし「無料で、安定していて、高画質」という条件を満たすものをお探しなら、DeskIn が最適の第一候補です! ぜひダウンロードしてお試しください。

LetsViewのような無料の画面ミラーリングアプリをお探しなら、独自の機能と強みを持つ5つの評価の良い代替アプリをご紹介します。ぜひご覧ください!


第1の選択肢 – Deskln

DeskInは、安定した高性能で知られる効率的なリモート接続と画面管理に特化したツールです。


強み:

  • 無料版は2K画質対応、クリアでロスレス

  • フレームレート、解像度、比率を調整可能で、さまざまな画面に柔軟に適応

  • 複数の投影方法をサポート(ワイヤレスミラーリング、QRコードスキャンによる画面転送)、同じネットワークにする必要なし。

  • システム互換性が高く、Windows、Mac、iOS、Androidで利用可能

  • ファイル転送、画面拡張、リモートコントロールなどの追加機能を提供

短所:

  • Google TVは未対応


ApowerMirror

ApowerMirrorは、双方向制御と多シナリオでの使用にフォーカスした包括的な画面ミラーリングソフトウェアです。


強み:

  • 無料版で720p画質(ウォーターマーク付き)をサポート、基本的なニーズに対応

  • 携帯電話とコンピューター間で画面をキャストすることが可能。

  • 追加機能(画面録画、スクリーンショットなど)を提供しており、チュートリアル作成やコンテンツ共有に適しています

短所:

  • 画質やフレームレートなどを調整できない。

  • 無料版にはウォーターマークがある

  • クロスプラットフォームの無料投影に時間制限がある

  • 無料版では1画面にのみミラーリング対応

  • 無料版では音声のキャストをサポートしない

Vysor


Vysorは開発者向けに設計されたシンプルで使いやすい画面ミラーリングツールです。


強み:

  • 無料版で基本的なミラーリング機能が利用可能。

  • 特別なアプリをインストールする必要がなく、ブラウザを通じて使用可能。

短所:

  • 無料版は画像品質が低い

  • iOSデバイスでは未対応

AirDroid Cast

AirDroid Castは、チーム向けのマルチデバイス接続とリモートコントロールに特化したツールです。


強み:

  • ブラウザ経由で画面ミラーリングが可能。

  • LANおよびインターネット経由で迅速な接続。

  • 複数のAndroidデバイスの画面を1台のPCに共有可能


短所:

  • 無料版は画像品質が低い

  • クロスプラットフォームコントロールは有料機能

iMyFone MirrorTo

iMyFone MirrorToは、マルチプラットフォームの投影ニーズに合わせて設計され、操作が直感的な強力なミラーリングツールです。

強み:

  • 複数のモバイルデバイスの接続と投影をサポート。

  • モバイルコードのスキャン、USBデータケーブル、Wi-Fiなどの方法で画面をコンピューターに投影し、数秒で音声を同期可能。

  • 外見スキンの切り替えをサポート

短所:

  • 無料版なし

  • モバイルからコンピューターへの投影のみ対応。他のソフトをインストールすればコンピューターの画面を投影可能。

5つの画面ミラーリングツールの比較:

Desklnを使用した画面ミラーリング方法

まず、画面をキャストするデバイスにDeskInをインストールし、無料アカウントを登録してログインします。

注意: 新しいデバイスから初めてログインする場合、登録メールでの確認が必要です。


方法1:パソコン画面のミラーリング

DeskInクライアントの「デバイスリスト」で画面をキャストしたいデバイスを見つけ、「画面管理」をクリックするだけで画面をミラーリングできます。

方法2:QRコードをスキャンして電話の画面をキャスト

携帯でDeskInにログインし、メインインターフェースの右上にあるスキャンアイコンをクリックして、画面をキャストしたいデバイスの「画面管理」にあるQRコードをスキャンします。

まとめ

上記の5つの無料ソフトはいずれも、安定かつ効率的な画面ミラーリング体験を提供し、LetsView の優れた代替手段となります。もし「無料で、安定していて、高画質」という条件を満たすものをお探しなら、DeskIn が最適の第一候補です! ぜひダウンロードしてお試しください。

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Chrome Remote Desktop and setup guide
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次は何でしょうか?

How to Create a Virtual Screen Windows 10

How to Create a Virtual Screen Windows 10 [Step-by-step Guide]

If you are searching for virtual screen windows 10, you are likely trying to simulate a second monitor, extend your desktop without extra hardware, or run applications that require multiple displays.

The problem is that the term "virtual screen" is often misunderstood. Some users mean Windows Virtual Desktop (or Azure Virtual Deskop). Others are looking for a true virtual monitor that appears in Display Settings. These are very different things.

In this guide, you'll learn:

  • What Windows can do by default

  • How to install a Virtual Display Driver

  • How to extend PC screen space using a virtual monitor

  • When a remote virtual screen solution, DeskIn, is a better choice

What Does "Virtual Screen Windows" Actually Mean?

When people search for virtual screen windows, they usually mean one of two things. The first is Windows Virtual Desktop (WVD), which is built into the system. The second is a hardware-level simulated display created through a Virtual Display Driver. WVD can be opened using the Windows 10 multiple desktop shortcut (press Win + Tab). You can create multiple desktops and switch between them.

However, this does not create a new monitor. It does not help you extend PC screen estate. It is not visible in Device Manager. It simply organizes desktops in windows. If you need an actual second monitor without plugins and hardware, you must create a virtual display that Windows can recognize as a display device.

Method 1. Use Windows Virtual Desktop (Built-In)

Before installing anything, check if you actually need a hardware-level virtual display. Windows 10 includes Virtual Desktop. Press Win + Tab, click "New Desktop," and you can separate applications into different workspaces.

This is useful if you want better multitasking. It can feel similar to a dual-screen virtual desktop setup because you can switch between desktops quickly. But it is not a real monitor.

You cannot:

  • Drag windows across virtual monitors

  • Extend PC screen space

  • Assign separate display resolutions

If your goal is simply productivity organization, this may be enough. But if you need Windows to think another monitor is connected, continue to the next method.

Method 2. Install a Virtual Display Driver for Windows 10

To create a true virtual screen Windows 10 environment, you need a Virtual Display Driver. This driver simulates a hardware monitor so that Windows registers it as a display device. It will appear in Display Settings just like a physical screen.

Common solutions include open-source Virtual Display Driver projects and tools like Amyuni virtual display. Many users searching for "Virtual screen windows 10 download" or "Virtual screen windows 10 free" are actually looking for this type of driver.


Step 1. Download the Driver

Copy Folder Path DeskIn
  1. Download a Virtual Display Driver package and extract it. Copy the folder path after extraction.

  2. Check your system if it is 64-bit or 32-bit by opening "About your PC" in Windows settings.


Step 2. Install via Command Prompt

Type cd DeskIn
  1. Open Command Prompt as administrator. Navigate to the extracted folder using:

    • cd [your folder path]

  2. Then run the installation command provided by your driver package, such as:

    • deviceinstaller64 install usbmmidd.inf usbmmidd

  3. After installation, enable the virtual display:

    • deviceinstaller64 enableidd

Windows may flash briefly, indicating that the new monitor has been detected.


Step 3. Extend the Display

Right-click on your desktop and open Display Settings. You will now see an additional monitor listed. Choose "Extend these displays" to extend the PC screen space. If you are wondering how to extend the screen on Windows, this is the same process as with a physical monitor. At this point, you have successfully created a virtual screen.

Additional Monitor DeskIn


Limitations of Virtual Display Driver Solutions

While this method works, it has several practical limitations. It requires administrator access. Many corporate devices do not allow driver installation. System updates can break compatibility. Security policies may block unsigned drivers. If your goal is building a virtual desktop streamer setup for remote work or running a headless PC without a monitor, driver management can become inconvenient.

This is where a remote-first virtual screen solution becomes more practical.


A Better Choice: DeskIn Virtual Screen for Remote Workflows

DeskIn Virtual Screen

If your use case involves remote access, streaming, or managing displays across devices, DeskIn offers a more modern solution. Instead of relying on local driver emulation, DeskIn generates a remote virtual display environment optimized for performance and stability.

This allows you to:

  • Extend PC screen space remotely

  • Create a virtual display on a headless machine

  • Manage multiple screens in remote sessions

  • Build a stable virtual desktop streamer environment

Because it avoids traditional driver installation, it reduces compatibility issues often associated with Virtual Display Driver Windows 10 methods. For professionals who frequently work remotely or manage multiple devices, this can be a more reliable approach than installing local drivers.

Free download DeskIn


Related Multi-Device Display Scenarios

Some users searching for virtual screen solutions are actually trying to solve related problems. For example, you might be looking up how to extend the display on a Mac or how to use an iPad as a second monitor in Windows 11. These use cases involve extending your desktop to another device rather than simulating a display internally.

Similarly, Virtual display Windows 11 functions the same way as Windows 10. There is still no native hardware-level virtual monitor feature built into the operating system. Whether you are using Windows 10 or exploring Virtual display Windows 11 solutions, the core limitation remains the same: Windows does not create hardware-level virtual monitors without additional tools.


FAQs About Virtual Screen Windows 10

1. How to create a virtual screen in Windows 10?

Windows lacks a native feature to create a hardware-level virtual monitor. You need either a physical "dummy plug" or a third-party Virtual Display Driver. DeskIn offers the easiest software-based solution to create and manage these virtual screens effortlessly.

2. How do I turn on the virtual screen?

For Windows Virtual Desktops, press Win + Tab. For a simulated monitor, enable it in Display Settings after installing a driver. DeskIn automates this process, activating your virtual screens instantly when needed for remote work.

3. Is there a virtual screen Windows 10 free option?

Yes, open-source drivers exist, but require complex manual installation and driver signing disablement. While free, they lack support and stability. For a hassle-free experience, DeskIn provides a reliable, user-friendly alternative that just works.

4. Does Windows 10 have a virtual desktop?

Yes, Windows 10 has a native "Virtual Desktop" feature (Win + Tab) for organizing tasks on one monitor. However, it does not create an actual video output signal. For true virtual displays needed in remote scenarios, you need a tool like DeskIn.


Final Thoughts

Creating a virtual screen Windows 10 setup depends on what you truly need. If you only need workspace organization, Windows Virtual Desktop is sufficient. If you need a simulated monitor, installing a Virtual Display Driver works but requires technical steps and administrator permissions.

If you need a more flexible, remote-ready solution for extending displays, streaming, or headless environments, a dedicated virtual screen platform like DeskIn may offer a more stable and scalable approach. Understanding these differences ensures you choose the right method instead of installing unnecessary drivers or relying on features that do not meet your needs.

Free download DeskIn
Chrome Remote Desktop and setup guide

How to Set Up & Use Chrome Remote Desktop: Complete Beginner's Guide | DeskIn Japan

How to Set Up and Use Chrome Remote Desktop in Japan: A Complete Beginner's Guide to CRD

What You'll Learn in This Article

This article walks through the basic setup and features of Chrome Remote Desktop (CRD), Google's free remote access tool — explained clearly for first-time users.

CRD is free, simple to configure, and integrates smoothly with your existing Google account and Chrome browser. It works across Windows, Mac, and smartphones, making it easy to get started with remote access from virtually any device.

For everyday personal use and one-off remote support sessions, it's an excellent option — though its features are limited to "Remote Access" and "Remote Support." For more advanced requirements — 4K display quality, low latency, or stable connections inside Japanese corporate networks — a professional-grade tool like DeskIn is worth considering.


Introduction

What Is Chrome Remote Desktop?

Chrome Remote Desktop (CRD) is a free remote access tool developed by Google. All you need is the Chrome browser and a Google account to remotely control another PC over the internet, from anywhere. No additional hardware is required, making it one of the most accessible ways to get started with remote desktop access.

Why Remote Desktop Is Useful in Japan

Hybrid work has become a fixture across Japan's working culture. Many companies — especially in Tokyo and other major cities — now expect employees to split their time between the office and home. Students, too, often find themselves needing access to files or software left behind on a home PC. And for those who have just joined the workforce as shinshakajin (新社会人 — literally "new members of society," the term for fresh graduates entering their first job, typically in April when Japan's fiscal and academic year begins), juggling unfamiliar tools across multiple environments can be genuinely stressful. Chrome Remote Desktop offers a practical, low-barrier solution for all of these situations.

Recommended Reads:
Which One Is Better, Chrome Remote Desktop Or Microsoft Remote Desktop?

Chrome Remote Desktop's Two Core Features

  1. Remote Access — Connect to Your Own Devices, Anytime

The "Remote Access" feature lets you connect to your home or office PC from any location, at any time. Once the host machine is configured, you can control it remotely as long as it's powered on — even if no one is sitting in front of it. This is ideal for pulling up a file you left on your home PC while you're at school or the office, or for using your full desktop environment from a laptop while you're out.

  1. Remote Support — Temporary Screen Sharing for Troubleshooting

The "Remote Support" feature is built for one-off, temporary sessions. By sharing a connection code, you can let someone else view or control your screen — or do the same for them — without exchanging account credentials. It's a clean and simple way to help a classmate, colleague, or family member work through a technical issue remotely.

Chrome Remote Desktop is designed specifically around these two functions. That focused scope makes it particularly easy to pick up, even if you've never used a remote desktop tool before.

Chrome Remote Desktop feature switching

What You'll Need Before Getting Started

A Google Account

A Google account is required. If you don't already have one, register before you begin. If you're already using Gmail or Google Drive, that same account will work here.

Google Chrome Browser

CRD runs inside the Chrome browser, so Chrome needs to be installed on both the host (the PC you want to access remotely) and the client (the device you're connecting from). Chrome can be installed alongside any other browser without conflict.

A Stable Internet Connection

Remote desktop transmits live screen data over the internet, so a reliable connection on both ends matters. If your Wi-Fi is inconsistent, a wired connection will generally produce a much smoother experience.

Step-by-Step Setup Guide

Setting Up the Host PC (the Computer You Want to Control)

Start by configuring Chrome Remote Desktop on the machine you'll be accessing remotely.

  1. Open Google Chrome and navigate to the Chrome Remote Desktop page.

  2. Follow the on-screen prompts to add the extension and complete the installation.

Chrome Remote Desktop addition and installation procedure
  1. Enable "Remote Access" and follow the steps to set a PIN code of at least six digits.

  2. Once setup is complete, this PC will appear in your list of remotely accessible devices.

Connecting from the Client Device (the Device You're Using to Connect)

Next, prepare the device you'll be connecting from.

  1. Log into Chrome with the same Google account and open the Chrome Remote Desktop page.

  2. Select the host PC from your device list.

Chrome Remote Desktop device connection screen
  1. If connecting from a smartphone or tablet, download the dedicated iOS or Android app and select your target PC from within the app.

Authenticating with Your PIN Code

After selecting the host PC, you'll be prompted to enter your PIN to verify the connection.

  1. Enter the PIN you created during setup on the client device.

  2. Once authenticated, the host PC's screen will appear on your device and you'll be able to control it with your mouse and keyboard.

  3. The connection is encrypted and can be ended at any time.

Tips for Getting More Out of CRD

Make the Most of Keyboard Shortcuts

Using keyboard shortcuts deliberately can make a real difference to your efficiency in a remote session. This is especially worth thinking about if you're switching between Windows and Mac, where key behaviour differs — particularly around:

  • The difference between the Ctrl and Cmd keys

  • Full-screen toggling and window switching

Familiarising yourself with these basics in advance will help things feel more natural. If shortcuts are being captured by your local device instead of reaching the remote machine, check the settings for an option like "Send all keyboard input to remote" — this is usually the fix.

Using CRD on Mobile: What to Expect

The mobile experience differs quite a bit from working on a desktop. Chrome Remote Desktop's mobile app is built around touch controls:

  • Swipe to move the mouse cursor

  • Pinch to zoom in or out

  • Toolbar at the bottom of the screen to access the keyboard and menu

Precise input — longer text entry, drag-and-drop, clicking small targets — is slower and more effortful on mobile than on a PC. In practice, mobile access works best for quick checks and light tasks. For anything more involved, a laptop or desktop will serve you much better.

Chrome Remote Desktop smartphone operation image

The Limitations of Chrome Remote Desktop

Simplicity Has Its Ceiling

Chrome Remote Desktop is, at its core, a tool built for "Remote Access" and "Remote Support" — nothing more. That focus is part of what makes it easy to use, but it also means that more specialised requirements hit a wall fast. If you need to transfer large files quickly, manage multiple users or devices, or keep detailed logs of remote sessions, you'll find CRD doesn't have the tools for the job.

Instability Inside Japanese Corporate Networks

Many Japanese companies — particularly larger organisations — maintain strict internal network environments managed by their IT departments (joho shisutemu-bu, 情報システム部). Firewalls, proxy settings, and restrictions on Google services are common, particularly in finance, manufacturing, and government-adjacent industries. In these environments, Chrome Remote Desktop connections can become unreliable, suffer significant lag, or fail entirely.

If you've started a new job in Japan and found that CRD simply won't connect from the office network, this is almost certainly why.

Network latency and firewall restrictions image

Dependency on Your Google Account

Because CRD is tied to a Google account, any disruption to that account — a forgotten password, an account lock, or a multi-factor authentication hiccup — directly affects your ability to access remote machines. For personal use this is manageable, but for anything business-critical, it's a meaningful single point of failure.

Ready for More? Meet DeskIn — A Professional Remote Desktop Solution

The Natural Next Step Up from CRD

Chrome Remote Desktop is a solid starting point, but as remote work needs become more regular and more demanding, many users find themselves running up against its limits. For those who need a more robust, feature-rich tool suited to daily professional use, DeskIn is the obvious step up.

Built to Handle Japan's Corporate Network Environments

DeskIn is engineered for stability in complex network setups — including the kind of strict firewalls and proxy configurations common in Japanese corporate IT infrastructure. Where CRD struggles in these environments, DeskIn is designed to maintain consistent, low-latency connections even under restrictive conditions.

Image comparison of image quality between Chrome Remote Desktop and Deskin

Professional Performance and an Intuitive Workflow

DeskIn supports 4K display quality and ultra-low-latency response, with a dedicated desktop client that isn't dependent on a browser. For creative work, detailed tasks, or simply getting through a full working day remotely without friction, this level of performance makes a tangible difference. 

→ Try DeskIn for free and explore what's possible

Summary

Chrome Remote Desktop is a free, easy-to-use tool that works well for personal use, occasional remote access, and basic screen sharing. If you're new to remote desktop tools — or if you just need a quick, no-cost way to access your own PC remotely — CRD is a perfectly reasonable place to start.

For day-to-day professional use in Japan, however, particularly within corporate network environments or when you need reliable performance and high display quality, CRD will likely fall short. In those cases, transitioning to or pairing CRD with a tool like DeskIn will give you a remote setup that's genuinely fit for purpose.

Recommended Reads:
9 Benefits of Remote Access & Best Practices for Modern Life

Windows HomeエディションのRDP制限とDeskInによる解決策

Windows Homeでリモートデスクトップが使えない理由と解決策【Proアップグレード不要】| DeskIn

この記事でわかること

  • Windows Homeエディションでリモートデスクトップのホストになれない理由

  • 「リモートデスクトップ 接続できない」エラーの正体

  • ¥28,380のProアップグレードなしで今すぐ使える方法

  • AnyDesk・TeamViewer・DeskInの無料プラン比較

はじめに:あなただけじゃない、この「壁」にはまった人は全国にいます

Yahoo!知恵袋や価格.comの掲示板を見ていると、こんな書き込みをよく見かけます。

「新しいノートパソコンを買って、自宅のPCにリモートデスクトップで接続しようとしたら『リモート デスクトップはリモート コンピューターに接続できませんでした』と表示されてしまいます。設定がおかしいのでしょうか?」

「Windows 11 Homeを使っています。会社のPCから自宅のPCに繋ごうとしてもエラーになります。何度試しても繋がりません。」

実は、これは設定の間違いでも、パソコンの故障でもありません。Windows Homeエディションには、リモートデスクトップで「接続を受け入れる」機能がそもそも入っていないのです。

ヨドバシカメラやビックカメラ、Amazon.co.jpで買える一般的なノートパソコンやデスクトップPCのほとんどは、このHomeエディションです。つまり、知らないうちに「リモートデスクトップで繋がれない」PCを買っていた、というケースが非常に多く起きています。

この記事では、その理由と、Proへのアップグレードなしで解決できる方法をわかりやすくお伝えします。

そもそも「Windows HomeとPro」は何が違うのか

Windowsには大きく分けて「Home」と「Pro」の2種類があります。

コンシューマー(一般消費者)向けに販売されているPCの大半にはHomeエディションが入っています。ProはBusinessユーザー向けのエディションで、HomeにはないビジネストしてのITの機能がいくつか追加されています。そのうちのひとつが、リモートデスクトップのホスト機能です。

「ホスト」と「クライアント」の違い

リモートデスクトップには2つの役割があります。

  • クライアント(接続する側): 手元のデバイスから、別のPCを操作する側

  • ホスト(接続される側): 遠隔から操作「される」PC

Microsoftは意図的に、ホストになる機能をHomeエディションから除外しています。つまり、Homeエディションのパソコンは「外から繋ぎに行く」ことはできても、「外から繋いでもらう」ことができないのです。

これが、「繋がらない」「接続できない」エラーの正体です。エラーメッセージには理由が書かれていないので、設定を何度直しても解決しません。

H3: なぜ日本でこの問題が多いのか

3つの理由が重なっています。

① ヨドバシ・ビックカメラ・Amazonで売っているPCの大半はHomeエディション
コストを抑えるため、一般向けに販売されるPCにはHomeが標準搭載されています。パッケージや仕様表にも小さく書いてあるだけで、「リモートデスクトップは使えません」と目立つところに書かれているわけではありません。

② 中小企業でもHomeが混在している
業務用のパソコンとしてHomeを採用している会社も少なくありません。テレワークを始めようとした際に、初めてこの制限に気づくケースがあります。

③ 購入時点では気づきにくい
「リモートデスクトップを使いたい」と思って購入したわけでなくても、後から必要になることはよくあります。その時点で初めて壁にぶつかります。

公式の解決策は「Proにアップグレード」:でも¥28,380かかります

Microsoftの公式な解決策は、Windows 11 ProのライセンスにアップグレードすることですMicrosoft Storeでの単体ライセンス通常価格は税込¥28,380です(2026年3月時点。最新価格はMicrosoft Store公式ページでご確認ください)。

ただし、このアップグレードにはいくつかの落とし穴があります。

PCが複数台あると費用が倍になる 自宅と職場、両方のPCをホストにしたい場合は、それぞれにライセンスが必要です。

アップグレードしてもVPN設定が必要になる Proにしても、インターネット越しのリモートアクセスにはVPN設定やルーターのポート開放が必要なことがあります。これは初めての方には難しい作業です。

「リモートデスクトップのためだけに¥28,380は高い」 知恵袋でも「Proにする必要はありますか?」「他に方法はありませんか?」という質問が多く寄せられています。

Proなしで使える代替ツール3つを比較する

実は、WindowsのエディションはRDP(リモートデスクトッププロトコル)を使わなければ関係ありません。サードパーティ製のリモートアクセスツールを使えば、HomeエディションのPCでも問題なく「ホスト」として使えます。

代表的な3つをご紹介します。

AnyDesk

かつては定番の無料ツールとして人気がありましたが、近年は無料プランの制限が大幅に厳しくなりました。

  • セッションが約5分で強制切断される

  • 無料版からファイル転送機能が削除された

  • 登録できるのは3台まで、同時接続は1セッションのみ

  • 「商用利用」と判定されると個人利用でも突然ブロックされる

有料プランは月額約US$14.90〜(約¥2,200〜)です。

TeamViewer

老舗の遠隔操作ツールで、無料プラン(個人利用限定)ではファイル転送や暗号化に対応しています。ただし、AnyDesk同様に「商用利用」と誤判定されて突然使えなくなる事例が多く、個人ユーザーからの不満の声も少なくありません。有料プランは月額約US$58.90〜(約¥8,700〜)と、個人が使うには割高です。

DeskIn(デスクイン)

上記2つとは異なり、無料プランでも制限が少ないのが大きな特徴です。

  • 最大3台のデバイスをフルリモートコントロール

  • セッション時間の制限なし

  • 商用利用の誤検知による強制切断なし

  • ファイル転送対応(最大12MB/s)

  • 解像度1080p 30FPSまで対応

  • VPN・ポート開放不要(DeskInのクラウドを経由して接続)

  • AES-256暗号化・ISO 27001認証取得済み

有料プランは月額US$9.90〜(約¥1,480〜)です。また、有料プランを試したい場合は7日間トライアル(US$0.99)が用意されており、お試し後は通常料金に移行します。

※ DeskInは米ドル(USD)での請求となります。日本円(JPY)の価格は参考値であり、為替レートにより変動します。

3つのツールを一覧で比較


AnyDesk

TeamViewer

DeskIn

Windows Home対応

無料プランのセッション時間

約5分で切断

個人利用は制限なし※

制限なし

無料プランのファイル転送

✕(削除済み)

◯(最大12MB/s)

商用利用誤検知による切断

頻繁に発生

頻繁に発生

なし

VPN・ポート開放

不要

不要

不要

有料プラン料金(目安)

US$14.90〜/月
(参考:約¥2,200〜)

US$58.90〜/月
(参考:約¥8,700〜)

US$9.90〜/月
(参考:約¥1,480〜)

※ TeamViewerの無料プランは個人利用限定。商用利用と判断された場合は制限がかかります。 USD建て請求。JPY参考価格は為替レートにより変動します。

DeskInでリモートデスクトップを始める手順

難しい設定は必要ありません。大まかな流れは以下のとおりです。

① DeskInをインストールする

接続したいPC(ホスト側)と、手元のデバイス(クライアント側)の両方にDeskInをインストールします。Windows・Mac・iOS・Androidに対応しています。

② アカウントを作成してログインする

同じアカウントで両方のデバイスにログインします。

③ デバイス一覧から接続する

クライアント側のDeskInを開くと、ホスト側のPCが一覧に表示されます。クリックするだけで接続できます。VPNの設定もポート開放も必要ありません。

よくある質問(FAQ)

Q. Windows Homeエディションはリモートデスクトップのホストになれますか?

なれません。Microsoftが意図的にHomeからRDPホスト機能を除外しています。DeskInのようなサードパーティツールを使えば、Homeエディションでもリモートデスクトップのホストとして機能します。

Q. 「リモートデスクトップ 接続できない」エラーはなぜ出るのですか?

接続先のPCがHomeエディションの場合、RDPホスト機能がないため接続を受け付けません。設定の問題ではなく、エディションの仕様です。DeskInのようなRDP以外のプロトコルを使うツールに切り替えることで解決できます。

Q. Proにアップグレードするとどのくらいかかりますか?

2026年3月時点で、Microsoft Storeでの通常価格は税込¥28,380です。複数台ある場合はそれぞれにライセンスが必要になります。

Q. DeskInは本当に無料で使えますか?

はい。無料プランでは最大3台のデバイスをセッション時間制限なしで使えます。セキュリティ(AES-256暗号化)やファイル転送にも無料から対応しています。

Q. 高齢の家族のPCのサポートにも使えますか?

使えます。DeskInはインストールして同じアカウントでログインするだけで接続できます。ルーターやネットワークの設定をしなくてもよいので、離れて暮らすご家族のPCトラブル対応にも活用されています。

まとめ:¥28,380を使う前に、まず試してほしいこと

「Windows Homeでリモートデスクトップが使えない」は、あなたの設定ミスでもPCの不具合でもありません。Microsoftのエディション設計によるものです。

公式の解決策であるProへのアップグレードは税込¥28,380かかります。しかし、リモートデスクトップだけが目的であれば、DeskInのような無料のサードパーティツールで同じことが実現できます。

セッション時間の制限なし、VPN設定不要、商用利用の誤検知なし。まずは無料プランから始めてみてください。

DeskIn 無料ダウンロードはこちら

おすすめの記事:

How to Create a Virtual Screen Windows 10

How to Create a Virtual Screen Windows 10 [Step-by-step Guide]

If you are searching for virtual screen windows 10, you are likely trying to simulate a second monitor, extend your desktop without extra hardware, or run applications that require multiple displays.

The problem is that the term "virtual screen" is often misunderstood. Some users mean Windows Virtual Desktop (or Azure Virtual Deskop). Others are looking for a true virtual monitor that appears in Display Settings. These are very different things.

In this guide, you'll learn:

  • What Windows can do by default

  • How to install a Virtual Display Driver

  • How to extend PC screen space using a virtual monitor

  • When a remote virtual screen solution, DeskIn, is a better choice

What Does "Virtual Screen Windows" Actually Mean?

When people search for virtual screen windows, they usually mean one of two things. The first is Windows Virtual Desktop (WVD), which is built into the system. The second is a hardware-level simulated display created through a Virtual Display Driver. WVD can be opened using the Windows 10 multiple desktop shortcut (press Win + Tab). You can create multiple desktops and switch between them.

However, this does not create a new monitor. It does not help you extend PC screen estate. It is not visible in Device Manager. It simply organizes desktops in windows. If you need an actual second monitor without plugins and hardware, you must create a virtual display that Windows can recognize as a display device.

Method 1. Use Windows Virtual Desktop (Built-In)

Before installing anything, check if you actually need a hardware-level virtual display. Windows 10 includes Virtual Desktop. Press Win + Tab, click "New Desktop," and you can separate applications into different workspaces.

This is useful if you want better multitasking. It can feel similar to a dual-screen virtual desktop setup because you can switch between desktops quickly. But it is not a real monitor.

You cannot:

  • Drag windows across virtual monitors

  • Extend PC screen space

  • Assign separate display resolutions

If your goal is simply productivity organization, this may be enough. But if you need Windows to think another monitor is connected, continue to the next method.

Method 2. Install a Virtual Display Driver for Windows 10

To create a true virtual screen Windows 10 environment, you need a Virtual Display Driver. This driver simulates a hardware monitor so that Windows registers it as a display device. It will appear in Display Settings just like a physical screen.

Common solutions include open-source Virtual Display Driver projects and tools like Amyuni virtual display. Many users searching for "Virtual screen windows 10 download" or "Virtual screen windows 10 free" are actually looking for this type of driver.


Step 1. Download the Driver

Copy Folder Path DeskIn
  1. Download a Virtual Display Driver package and extract it. Copy the folder path after extraction.

  2. Check your system if it is 64-bit or 32-bit by opening "About your PC" in Windows settings.


Step 2. Install via Command Prompt

Type cd DeskIn
  1. Open Command Prompt as administrator. Navigate to the extracted folder using:

    • cd [your folder path]

  2. Then run the installation command provided by your driver package, such as:

    • deviceinstaller64 install usbmmidd.inf usbmmidd

  3. After installation, enable the virtual display:

    • deviceinstaller64 enableidd

Windows may flash briefly, indicating that the new monitor has been detected.


Step 3. Extend the Display

Right-click on your desktop and open Display Settings. You will now see an additional monitor listed. Choose "Extend these displays" to extend the PC screen space. If you are wondering how to extend the screen on Windows, this is the same process as with a physical monitor. At this point, you have successfully created a virtual screen.

Additional Monitor DeskIn


Limitations of Virtual Display Driver Solutions

While this method works, it has several practical limitations. It requires administrator access. Many corporate devices do not allow driver installation. System updates can break compatibility. Security policies may block unsigned drivers. If your goal is building a virtual desktop streamer setup for remote work or running a headless PC without a monitor, driver management can become inconvenient.

This is where a remote-first virtual screen solution becomes more practical.


A Better Choice: DeskIn Virtual Screen for Remote Workflows

DeskIn Virtual Screen

If your use case involves remote access, streaming, or managing displays across devices, DeskIn offers a more modern solution. Instead of relying on local driver emulation, DeskIn generates a remote virtual display environment optimized for performance and stability.

This allows you to:

  • Extend PC screen space remotely

  • Create a virtual display on a headless machine

  • Manage multiple screens in remote sessions

  • Build a stable virtual desktop streamer environment

Because it avoids traditional driver installation, it reduces compatibility issues often associated with Virtual Display Driver Windows 10 methods. For professionals who frequently work remotely or manage multiple devices, this can be a more reliable approach than installing local drivers.

Free download DeskIn


Related Multi-Device Display Scenarios

Some users searching for virtual screen solutions are actually trying to solve related problems. For example, you might be looking up how to extend the display on a Mac or how to use an iPad as a second monitor in Windows 11. These use cases involve extending your desktop to another device rather than simulating a display internally.

Similarly, Virtual display Windows 11 functions the same way as Windows 10. There is still no native hardware-level virtual monitor feature built into the operating system. Whether you are using Windows 10 or exploring Virtual display Windows 11 solutions, the core limitation remains the same: Windows does not create hardware-level virtual monitors without additional tools.


FAQs About Virtual Screen Windows 10

1. How to create a virtual screen in Windows 10?

Windows lacks a native feature to create a hardware-level virtual monitor. You need either a physical "dummy plug" or a third-party Virtual Display Driver. DeskIn offers the easiest software-based solution to create and manage these virtual screens effortlessly.

2. How do I turn on the virtual screen?

For Windows Virtual Desktops, press Win + Tab. For a simulated monitor, enable it in Display Settings after installing a driver. DeskIn automates this process, activating your virtual screens instantly when needed for remote work.

3. Is there a virtual screen Windows 10 free option?

Yes, open-source drivers exist, but require complex manual installation and driver signing disablement. While free, they lack support and stability. For a hassle-free experience, DeskIn provides a reliable, user-friendly alternative that just works.

4. Does Windows 10 have a virtual desktop?

Yes, Windows 10 has a native "Virtual Desktop" feature (Win + Tab) for organizing tasks on one monitor. However, it does not create an actual video output signal. For true virtual displays needed in remote scenarios, you need a tool like DeskIn.


Final Thoughts

Creating a virtual screen Windows 10 setup depends on what you truly need. If you only need workspace organization, Windows Virtual Desktop is sufficient. If you need a simulated monitor, installing a Virtual Display Driver works but requires technical steps and administrator permissions.

If you need a more flexible, remote-ready solution for extending displays, streaming, or headless environments, a dedicated virtual screen platform like DeskIn may offer a more stable and scalable approach. Understanding these differences ensures you choose the right method instead of installing unnecessary drivers or relying on features that do not meet your needs.

Free download DeskIn
Chrome Remote Desktop and setup guide

How to Set Up & Use Chrome Remote Desktop: Complete Beginner's Guide | DeskIn Japan

How to Set Up and Use Chrome Remote Desktop in Japan: A Complete Beginner's Guide to CRD

What You'll Learn in This Article

This article walks through the basic setup and features of Chrome Remote Desktop (CRD), Google's free remote access tool — explained clearly for first-time users.

CRD is free, simple to configure, and integrates smoothly with your existing Google account and Chrome browser. It works across Windows, Mac, and smartphones, making it easy to get started with remote access from virtually any device.

For everyday personal use and one-off remote support sessions, it's an excellent option — though its features are limited to "Remote Access" and "Remote Support." For more advanced requirements — 4K display quality, low latency, or stable connections inside Japanese corporate networks — a professional-grade tool like DeskIn is worth considering.


Introduction

What Is Chrome Remote Desktop?

Chrome Remote Desktop (CRD) is a free remote access tool developed by Google. All you need is the Chrome browser and a Google account to remotely control another PC over the internet, from anywhere. No additional hardware is required, making it one of the most accessible ways to get started with remote desktop access.

Why Remote Desktop Is Useful in Japan

Hybrid work has become a fixture across Japan's working culture. Many companies — especially in Tokyo and other major cities — now expect employees to split their time between the office and home. Students, too, often find themselves needing access to files or software left behind on a home PC. And for those who have just joined the workforce as shinshakajin (新社会人 — literally "new members of society," the term for fresh graduates entering their first job, typically in April when Japan's fiscal and academic year begins), juggling unfamiliar tools across multiple environments can be genuinely stressful. Chrome Remote Desktop offers a practical, low-barrier solution for all of these situations.

Recommended Reads:
Which One Is Better, Chrome Remote Desktop Or Microsoft Remote Desktop?

Chrome Remote Desktop's Two Core Features

  1. Remote Access — Connect to Your Own Devices, Anytime

The "Remote Access" feature lets you connect to your home or office PC from any location, at any time. Once the host machine is configured, you can control it remotely as long as it's powered on — even if no one is sitting in front of it. This is ideal for pulling up a file you left on your home PC while you're at school or the office, or for using your full desktop environment from a laptop while you're out.

  1. Remote Support — Temporary Screen Sharing for Troubleshooting

The "Remote Support" feature is built for one-off, temporary sessions. By sharing a connection code, you can let someone else view or control your screen — or do the same for them — without exchanging account credentials. It's a clean and simple way to help a classmate, colleague, or family member work through a technical issue remotely.

Chrome Remote Desktop is designed specifically around these two functions. That focused scope makes it particularly easy to pick up, even if you've never used a remote desktop tool before.

Chrome Remote Desktop feature switching

What You'll Need Before Getting Started

A Google Account

A Google account is required. If you don't already have one, register before you begin. If you're already using Gmail or Google Drive, that same account will work here.

Google Chrome Browser

CRD runs inside the Chrome browser, so Chrome needs to be installed on both the host (the PC you want to access remotely) and the client (the device you're connecting from). Chrome can be installed alongside any other browser without conflict.

A Stable Internet Connection

Remote desktop transmits live screen data over the internet, so a reliable connection on both ends matters. If your Wi-Fi is inconsistent, a wired connection will generally produce a much smoother experience.

Step-by-Step Setup Guide

Setting Up the Host PC (the Computer You Want to Control)

Start by configuring Chrome Remote Desktop on the machine you'll be accessing remotely.

  1. Open Google Chrome and navigate to the Chrome Remote Desktop page.

  2. Follow the on-screen prompts to add the extension and complete the installation.

Chrome Remote Desktop addition and installation procedure
  1. Enable "Remote Access" and follow the steps to set a PIN code of at least six digits.

  2. Once setup is complete, this PC will appear in your list of remotely accessible devices.

Connecting from the Client Device (the Device You're Using to Connect)

Next, prepare the device you'll be connecting from.

  1. Log into Chrome with the same Google account and open the Chrome Remote Desktop page.

  2. Select the host PC from your device list.

Chrome Remote Desktop device connection screen
  1. If connecting from a smartphone or tablet, download the dedicated iOS or Android app and select your target PC from within the app.

Authenticating with Your PIN Code

After selecting the host PC, you'll be prompted to enter your PIN to verify the connection.

  1. Enter the PIN you created during setup on the client device.

  2. Once authenticated, the host PC's screen will appear on your device and you'll be able to control it with your mouse and keyboard.

  3. The connection is encrypted and can be ended at any time.

Tips for Getting More Out of CRD

Make the Most of Keyboard Shortcuts

Using keyboard shortcuts deliberately can make a real difference to your efficiency in a remote session. This is especially worth thinking about if you're switching between Windows and Mac, where key behaviour differs — particularly around:

  • The difference between the Ctrl and Cmd keys

  • Full-screen toggling and window switching

Familiarising yourself with these basics in advance will help things feel more natural. If shortcuts are being captured by your local device instead of reaching the remote machine, check the settings for an option like "Send all keyboard input to remote" — this is usually the fix.

Using CRD on Mobile: What to Expect

The mobile experience differs quite a bit from working on a desktop. Chrome Remote Desktop's mobile app is built around touch controls:

  • Swipe to move the mouse cursor

  • Pinch to zoom in or out

  • Toolbar at the bottom of the screen to access the keyboard and menu

Precise input — longer text entry, drag-and-drop, clicking small targets — is slower and more effortful on mobile than on a PC. In practice, mobile access works best for quick checks and light tasks. For anything more involved, a laptop or desktop will serve you much better.

Chrome Remote Desktop smartphone operation image

The Limitations of Chrome Remote Desktop

Simplicity Has Its Ceiling

Chrome Remote Desktop is, at its core, a tool built for "Remote Access" and "Remote Support" — nothing more. That focus is part of what makes it easy to use, but it also means that more specialised requirements hit a wall fast. If you need to transfer large files quickly, manage multiple users or devices, or keep detailed logs of remote sessions, you'll find CRD doesn't have the tools for the job.

Instability Inside Japanese Corporate Networks

Many Japanese companies — particularly larger organisations — maintain strict internal network environments managed by their IT departments (joho shisutemu-bu, 情報システム部). Firewalls, proxy settings, and restrictions on Google services are common, particularly in finance, manufacturing, and government-adjacent industries. In these environments, Chrome Remote Desktop connections can become unreliable, suffer significant lag, or fail entirely.

If you've started a new job in Japan and found that CRD simply won't connect from the office network, this is almost certainly why.

Network latency and firewall restrictions image

Dependency on Your Google Account

Because CRD is tied to a Google account, any disruption to that account — a forgotten password, an account lock, or a multi-factor authentication hiccup — directly affects your ability to access remote machines. For personal use this is manageable, but for anything business-critical, it's a meaningful single point of failure.

Ready for More? Meet DeskIn — A Professional Remote Desktop Solution

The Natural Next Step Up from CRD

Chrome Remote Desktop is a solid starting point, but as remote work needs become more regular and more demanding, many users find themselves running up against its limits. For those who need a more robust, feature-rich tool suited to daily professional use, DeskIn is the obvious step up.

Built to Handle Japan's Corporate Network Environments

DeskIn is engineered for stability in complex network setups — including the kind of strict firewalls and proxy configurations common in Japanese corporate IT infrastructure. Where CRD struggles in these environments, DeskIn is designed to maintain consistent, low-latency connections even under restrictive conditions.

Image comparison of image quality between Chrome Remote Desktop and Deskin

Professional Performance and an Intuitive Workflow

DeskIn supports 4K display quality and ultra-low-latency response, with a dedicated desktop client that isn't dependent on a browser. For creative work, detailed tasks, or simply getting through a full working day remotely without friction, this level of performance makes a tangible difference. 

→ Try DeskIn for free and explore what's possible

Summary

Chrome Remote Desktop is a free, easy-to-use tool that works well for personal use, occasional remote access, and basic screen sharing. If you're new to remote desktop tools — or if you just need a quick, no-cost way to access your own PC remotely — CRD is a perfectly reasonable place to start.

For day-to-day professional use in Japan, however, particularly within corporate network environments or when you need reliable performance and high display quality, CRD will likely fall short. In those cases, transitioning to or pairing CRD with a tool like DeskIn will give you a remote setup that's genuinely fit for purpose.

Recommended Reads:
9 Benefits of Remote Access & Best Practices for Modern Life

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著作権 © 2026 Zuler Technology PTE. LTD. 無断複写・転載を禁じます。

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