Knowledge base for software setup, errors, and daily tool work.

Chrome Extension Not Working After Update: Fixes

After a Chrome update, some extensions may stop working, show errors, or disappear. This usually ...

Checklist for PowerShell Command Not Found Issues

You type a command in PowerShell and get "not recognized" or "not found." It's a common frustrati...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix Windows Defender Port Already Allocated Error in Command Line

If you see "port already allocated" when trying to run Windows Defender from the command line, it...

Fix Windows Search Not Finding Files in a Folder

You open a folder, type a filename into the search box, and Windows returns nothing—even though y...

Fix Remote Desktop Error Code 0x4 on Mac

You try to connect to a Windows PC from your Mac using Microsoft Remote Desktop, but the connecti...