
Solved - Windows App grey screen after 26H2 update
Some of the clients I manage had a problem after the Windows 11 26H2 update and this causes the Windows App to start, but not show any login or cloud resources and the end users were unable to do their work.
After some investigation, this turned out to be an WebView2 error, where the installed version misaligns the registered version. If somebody also gets this error, I have described how to fix this problem at my website: https://justinverstijnen.nl/fix-windows-app-grey-screen-windows-11-26h2-webview2/
However, I couldn't find any corelation to the 26H2 update (yet) so this might be unrelated. In my case the multiple computers with this problem started having the problem right after the 26H2 update.