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Windows 11 Installation Assistant Stuck at 99%: Fixes That Work - Cloudflare 521 Error on Nginx: How to Fix-How to Fix Git Authentication Failed in VSCode with SSH

Updated 2026-07-28 10:55:57office-tools
Windows 11 Installation Assistant Stuck at 99%: Fixes That Work - Cloudflare 521 Error on Nginx: How to Fix-How to Fix Git Authentication Failed in VSCode with SSH
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.

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