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Fix Windows Defender Error 0x800106ba: Failed to Start - Troubleshoot Microsoft Store Blank Screen for Apps-How to Fix Windows Update Connection Timeout

Updated 2026-06-13 13:59:59windows-fixes
Fix Windows Defender Error 0x800106ba: Failed to Start - Troubleshoot Microsoft Store Blank Screen for Apps-How to Fix Windows Update Connection Timeout
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.

More repair notes

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