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Home / developer-tools / Cloudflare Error 521: Web Server Is Down Checklist - Fix BitLocker 502 Bad Gateway During Recovery Key Retrieval-BitLocker Rate Limit Exceeded: Waiting Time and Fixes

Cloudflare Error 521: Web Server Is Down Checklist - Fix BitLocker 502 Bad Gateway During Recovery Key Retrieval-BitLocker Rate Limit Exceeded: Waiting Time and Fixes

2026-06-18 14:02:42developer-tools
Cloudflare Error 521: Web Server Is Down Checklist - Fix BitLocker 502 Bad Gateway During Recovery Key Retrieval-BitLocker Rate Limit Exceeded: Waiting Time and Fixes

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.