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Chrome Startup Crash on Windows 11: Fixes That Work - How to Resolve Cloudflare 521 After Server Update-Windows Security App Not Opening? Try These Steps

Updated 2026-07-28 14:34:27developer-tools
Chrome Startup Crash on Windows 11: Fixes That Work - How to Resolve Cloudflare 521 After Server Update-Windows Security App Not Opening? Try These Steps
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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