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Fix Windows 11 Installation Assistant Stuck at 99% in Safe Mode - How to Resolve Nginx Upstream Connection Refused 443-Fix Windows 11 Installation Assistant Stuck at 99%

Updated 2026-07-28 10:16:30cloud-software
Fix Windows 11 Installation Assistant Stuck at 99% in Safe Mode - How to Resolve Nginx Upstream Connection Refused 443-Fix Windows 11 Installation Assistant Stuck at 99%
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.