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How to Fix Cloudflare 521 Error (Port 443 Blocked) - Resolving index.lock Exists Error in VS Code-Troubleshoot WiFi Connected No Internet Windows 11

Updated 2026-07-28 06:01:45windows-fixes

How to Fix Cloudflare 521 Error (Port 443 Blocked) - Resolving index.lock Exists Error in VS Code-Troubleshoot WiFi Connected No Internet Windows 11

Prepare

Execute

Validate

Document

Operational follow-up

Record the exact option, command, or setting that changed the result.
Keep a rollback note if the workflow affects shared files or team settings.

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