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

How to Fix PowerShell Crashing on Startup

If PowerShell crashes immediately after you open it, you're not alone. This often happens due to ...

How to Clear Windows Update Cache for Pending Installs

You see 'Pending install' in Windows Update but the download or install never finishes. Sometimes...

How to Fix '404 Not Found' File Path Errors in CMD

How to Fix Windows Security Error 0x80073b01

You may see error 0x80073b01 when opening Windows Security or trying to use its features. It usua...

Fix Windows Defender Permission Denied on Scan

If you see a 'Permission Denied' message when running a Windows Defender scan, it usually means t...

Fix Windows Defender Update Error 0x80070643

You try to update Windows Defender and see error 0x80070643. This usually means a Windows Update ...