MicrosoftEdge / MicrosoftEdge/WebView2Feedback
[Problem/Bug]: WebView2 runtime installation doesn't work any more in Windows Sandbox
@ambikakunnath is already working on this.
Since Sep 8, 2026.
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Description
What happened?
Up until a few days, the WebView2 runtime installation did worked fine in the Windows Sandbox. Now it reports a disk size issue (but I suspect it's an access denied issue).
Importance
Important. My app's user experience is significantly compromised.
Runtime Channel
Stable release (WebView2 Runtime)
Runtime Version
152.0.4191.53
SDK Version
No response
Framework
WinUI3/WinAppSDK
Operating System
Windows 11
OS Version
Windows 11 Enterprise 24H2 26100.9278 Windows Feature Experience Pack 1000.26100.360.0
Repro steps
Start a new Windows Sandbox.
Download MicrosoftEdgeWebview2Setup.exe from https://go.microsoft.com/fwlink/p/?LinkId=2124703 (evergreen bootstrapper) but I also tried the evergreen standalone
Run it
Repros in Edge Browser
No, issue does not reproduce in the corresponding Edge version
Regression
Regression in newer Runtime
Last working version (if regression)
I don't now but quite recent
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Assessment
This issue has not been assessed yet.