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

How to Enable Windows Security Auto-Start in Windows 11

If you notice that Windows Security isn't opening automatically when you start Windows 11, or if ...

Fix Windows Security Module Service Not Running

You open Windows Security and see a message that the service isn't running. The shield icon in th...

How to Fix WinRAR Checksum Error and Repair Corrupted Files

You download a large RAR archive, double-click to extract, and get a "Checksum error" or "CRC fai...

Fix Task Scheduler 502 Bad Gateway Not Working

If you see a 502 Bad Gateway error when Task Scheduler runs a task that hits a web service or IIS...

Fix Chrome 504 Gateway Timeout When Using a VPN