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

Fix Windows Security Version Mismatch on Windows 10

If you see a "version mismatch" error when opening Windows Security on Windows 10, it usually mea...

Fix Windows Activation Error 504 Caused by Firewall Settings

You try to activate Windows and get error 504. This often means your firewall is blocking communi...

PowerShell Command Not Found but Works in CMD

Fix PowerShell Ubuntu Permission Denied Error on WSL

You're running a PowerShell script in Ubuntu on WSL and get a permission denied erro...

Fix 'Port Already in Use' Error in Windows 10 Command Prompt

When you try to start a local server or application and see Error: listen EADDRINUSE :::808...