Home / macos-help / Windows Store Error 0x80073cf9: How to Fix Installation Failures - How to Fix Windows Update 502 Bad Gateway Proxy Error-Fix SSH Host Key Verification Failed by Clearing known_hosts

Windows Store Error 0x80073cf9: How to Fix Installation Failures - How to Fix Windows Update 502 Bad Gateway Proxy Error-Fix SSH Host Key Verification Failed by Clearing known_hosts

Updated 2026-06-13 13:00:24macos-help

Windows Store Error 0x80073cf9: How to Fix Installation Failures - How to Fix Windows Update 502 Bad Gateway Proxy Error-Fix SSH Host Key Verification Failed by Clearing known_hosts

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.

More workflow manuals

Fix 'Putty Connection Refused' Error on Localhost Fix Windows Update Stuck Due to DNS Settings How to Configure Windows Defender Firewall Settings for a Network Fix 'Windows Update Port Already Allocated Permission Denied'Fix Windows Defender Login Loop: Step-by-Step Guide Fix Windows Update SSL Certificate Error 0x80072f0d