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

How to Fix Windows Security Service Unavailable

When Windows Security shows "Service unavailable" or a red banner, your antivirus and firewall pr...

Fix Git 'Fatal: Repository Not Found' Despite SSH Key Setup

You've set up an SSH key and added it to your Git hosting service, but when you try to clone or p...

Fix Windows Security Cache Full Error: Clear & Reset Steps

If you see a message that the Windows Security cache is full, it usually means the antivirus or s...

Fix Windows Update Token Expired After Password Change

If you changed your Windows password recently and now Windows Update fails with a "token expired"...

Fix Windows Update Invalid Configuration Error on Windows 10

You may see a 'Windows Update invalid configuration' error when trying to check for or install up...

Fix Windows Security Authentication Error 0x80070035