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Since a few days my explorer crashes and restarts everytime I open the TaskView (Win + Tab). Anytime else the system is stable. It shows the same behavior when using the task bar button right next to the windows-button.

Eventlog tracks all these crashes and shows:

  • path to faulty application: C:\WINDOWS\explorer.exe
  • path to faulty module: C:\WINDOWS\System32\KERNELBASE.dll

Furthermore I cannot see any more hint.

When starting in secure mode (with network), pressing Win+Tab causes not an instant crash and restart of explorer. Instead the TaskView freezes and does not allow any input. An error occures in the background which tells: "The system detected an overrun of a stack-based buffer in this application."

This only happens in secure mode.

I already tried:

  • Windows Update to 21H2 - 19044
  • DISM /Online /Cleanup-Image /CheckHealth
  • DISM /Online /Cleanup-Image /RestoreHealth
  • renaming HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\BannerStore to BannerStoreOld

What else can I try? Of course, in my opinion I didn't made any groundbraking changes, no installs or uninstalls etc. There is also no high sensitive anti virus or smth.

Danaq
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2 Answers2

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The issue was (maybe temporarily) solved by the repair installation of windows10. This ended up in a downgrade from (19044 to 19043) compared to the build before. During this hassle I realized, that my installation was registered for the insider program, so probably this is a hint for someone else who encounters such issues.

Hopefully, the final version of the 19044 build will be released without this issue.

Thanks a lot to @John

Danaq
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Task View (winkey+tab) crashes if you have a million alternate desktops open. To fix it you just close the desktops with ctrl+win+right, ctrl+win+f4 until all desktops are closed. This bug has been a mystery to me since the darn OS came out and I cant find squat online. You're welcome.

Daniel Luttrell
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