Fix Microsoft Edge WebView2 Runtime Failed to Start on Win 11/10

Resolve the issue of "Microsoft Edge WebView2 Runtime installation failed"

Windows users may encounter an error "Microsoft Edge WebView2 Runtime Installer cannot start" when trying to install or update the Microsoft Edge WebView2 runtime. This article will explain how to resolve this issue.

The Microsoft Edge WebView2 runtime installer provides web-based functionality for Microsoft 365 desktop applications. In Windows 11, this component is installed on the system by default. In earlier versions of Windows, it was automatically installed to users using modern versions of Microsoft Office and used to run Office applications built on the Web framework and components embedded in the application.

However, some users reported having problems with "Microsoft Edge WebView2 Runtime not booting" on Windows 11/10. This problem can be caused by a variety of reasons, including corruption of the installation file, incompatibility of the software, or insufficient permissions. When this error occurs, the user will not be able to continue installing or updating the WebView2 runtime.

Solution:

Method 1: Run the Microsoft Edge WebView2 Runtime Installer as an administrator

1. Press Windows E to open File Explorer .
2. Locate the Microsoft Edge WebView2 Runtime installer , right-click and select Run as administrator .

Method 2: Disable third-party antivirus software

If you encounter the problem of "Microsoft Edge WebView2 Runtime not booting" on Windows 11/10, the culprit may be third-party antivirus software. Therefore, if you have antivirus software installed on your computer, it is recommended to disable it to resolve this error.

Method 3: Clear temporary Windows files

1. Type Disk Cleanup in the search box.
2. Select the drive you want to clean up and click OK to continue.
3. After the scan is completed, the program will list the files that can be deleted. Select the file you want to delete and click OK .

Method 4: Repair Microsoft Edge WebView2 Runtime Installer

1. Open Control Panel and click Uninstall Programs .
2. Locate Microsoft WebView2 Runtime , right-click and select Change .
3. Then, the following window will appear and you need to click Repair .

Method 5: Install Microsoft Edge WebView2 Runtime in Safe Mode

If the above solution does not resolve the issue of "Microsoft Edge WebView2 Runtime cannot start", you can install Microsoft Edge WebView2 Runtime in safe mode.

1. Restart your computer. Press the F8 key repeatedly until the Advanced Startup Options menu appears.
2. Select Safe Mode from the menu and press Enter .
3. After the computer starts to safe mode, find the Microsoft Edge WebView2 runtime installer.
4. Right-click the Microsoft Edge WebView2 runtime installer and select Run as administrator .
5. Follow the on-screen instructions to complete the installation of WebView2 runtime.

Summarize

This article provides five ways to solve the problem of "Microsoft Edge WebView2 Runtime not starting" that you can try one by one until the problem is resolved.

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