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How to Flush DNS on Windows 11 to Fix Internet Issues - Troubleshoot Windows 11 Install Assistant 99% Hang-Fix Nginx Upstream Connection Refused Behind Cloudflare

Updated 2026-07-28 07:52:23windows-fixes

How to Flush DNS on Windows 11 to Fix Internet Issues - Troubleshoot Windows 11 Install Assistant 99% Hang-Fix Nginx Upstream Connection Refused Behind Cloudflare

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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