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Home / backup-recovery / Renew an Expired Cloudflare Origin Certificate: Step-by-Step - Resolve Cloudflare 521 Error (Port 443 Blocked)-VS Code Git Lock File Error Fix

Renew an Expired Cloudflare Origin Certificate: Step-by-Step - Resolve Cloudflare 521 Error (Port 443 Blocked)-VS Code Git Lock File Error Fix

Updated 2026-07-28 06:41:56backup-recovery
Renew an Expired Cloudflare Origin Certificate: Step-by-Step - Resolve Cloudflare 521 Error (Port 443 Blocked)-VS Code Git Lock File Error Fix
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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