Windows Start button and Cortana stop working and Excel clipboard goes haywire

Mar 17, 2017
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I've had this problem on this machine ever since installing W10 RTM (I'm now on 22H2) where something goes haywire with Explorer.exe that causes the following symptoms:

  • The Windows Start button stops working so I can't open the Start menu.
  • Cortana stops responding.
  • The clipboard in Excel starts toing weird things – basically Excel refuses to release the clipboard.

Restarting Explorer (taskkill /f /im explorer.exe and then start explorer.exe) fixes the problem for a few hours until it happens again.

I’ve installed all optional Windows Updates
I've tried disabling all non-Microsoft Shell Extensions and services
I’ve run $manifest = (Get-AppxPackage Microsoft.WindowsStore).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest
I’ve run SFC /scannow
I’ve Rebuild the search Index
I changed the Start registry entry to “4” at Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WpnUserService
I created the EnableXamlStartMenu registry entry at Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
I’ve created a new user profile.

Any other ideas? Thanks!!

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