Forum Discussion

emma98's avatar
emma98
Copper Contributor
Aug 17, 2026

Quick Assist not opening error code - %d

3 days ago I tried opening Quick Assist to getting a %d error code.  I have reset my computer twice, tried creating a local account as administrator and tried opening Quick Assist that way, still sa...
@Windows Server
technical support
Jamony's avatar
Jamony
MCT
Aug 21, 2026

You’re seeing Quick Assist fail with the literal %d message on Windows 11 Home Insider Dev build 29639.1000, while WebView2 repair options are unavailable and Xbox sign-in also fails. Quick Assist requires Microsoft Edge WebView2, but %d is not one of Microsoft’s documented Quick Assist error codes, so another reset is unlikely to help. Install every available Windows and Microsoft Store update, then update Edge. Download and run the current WebView2 Evergreen Runtime installer even if WebView2 already appears under Installed apps. Next, run wsreset.exe, reopen Microsoft Store, uninstall and reinstall Quick Assist, and restart. Test both Quick Assist and Xbox sign-in again. If both still fail, record the problem in Feedback Hub under the Insider build and include the exact build, time, and screenshots. Because this is a Dev build, also test a supported stable Windows build before treating it as an account-specific fault.