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Windows Security App Not Working After Update: Fixes - Fix Windows 11 Installation Assistant Stuck at 99%-How to Fix Windows Update Error 0x80070005

Updated 2026-07-28 07:04:22windows-fixes
Windows Security App Not Working After Update: Fixes - Fix Windows 11 Installation Assistant Stuck at 99%-How to Fix Windows Update Error 0x80070005
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.