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Chrome Profile Sync Not Working After Update: Fixes - Fixing Cloudflare 521 Error: Enable Origin Pull Setup-Resolving NXDOMAIN Errors After DNS Change

Updated 2026-07-28 12:25:22browser-issues
Chrome Profile Sync Not Working After Update: Fixes - Fixing Cloudflare 521 Error: Enable Origin Pull Setup-Resolving NXDOMAIN Errors After DNS Change
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.