Checklists for software errors, setup, and tool workflows.

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Fix Windows Update 502 Bad Gateway Related to Proxy Settings

If you see a "502 Bad Gateway" error when running Windows Update, it often points to a problem wi...

Fix Windows Search 504 Gateway Timeout After Update

After a Windows update, some users see a 504 gateway timeout when using Windows Search. This usua...

Fix Windows Defender Error 0x80073b01

If you see error code 0x80073b01 when opening Windows Defender or trying to run a scan, it usuall...

How to Fix Windows Security Proxy Error

You may see a Windows Security proxy error when trying to access the internet after a network cha...

Fix Windows Defender Proxy Error: Permission Denied

You try to update Windows Defender or run a scan and get an error like "Permission denied"

Chrome Browser Troubleshooting Checklist for Beginners
Chrome can suddenly stop working—pages won't load, the browser crashes, or it runs slowly. This c...