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How to Fix Cloudflare Error 521: Server Not Responding - Windows 11 Taskbar Icons Not Showing: Troubleshooting Guide-Cloudflare Partial DNS Propagation Troubleshooting

Updated 2026-07-28 09:55:04browser-issues

How to Fix Cloudflare Error 521: Server Not Responding - Windows 11 Taskbar Icons Not Showing: Troubleshooting Guide-Cloudflare Partial DNS Propagation Troubleshooting

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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