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Cloudflare 521 Error: Troubleshooting and Fixes - How to Set Node.js Max Heap Size Permanently-Fix Windows Search Index Exclude Folder Not Working

Updated 2026-07-28 12:02:11cloud-software
Cloudflare 521 Error: Troubleshooting and Fixes - How to Set Node.js Max Heap Size Permanently-Fix Windows Search Index Exclude Folder Not Working
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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