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

Fix Windows Defender High CPU Usage with Registry Tweaks

If Windows Defender is using 30-50% CPU constantly, even when idle, it's usually due to aggressiv...

Fix Windows Defender Login Loop After Update

After a Windows update, some users find themselves stuck in a login loop when opening Windows Def...

Fix Windows Defender Authentication Failed Group Policy Error

You may see an error saying "Windows Defender authentication failed" after applying a Group Polic...

Fixing Microsoft Teams Rate Limit Error When Sending Messages

Fix Windows Defender Not Starting Due to Invalid Config

If Windows Defender won't start and you see an error about invalid configuration, the problem is ...

Fix CMD Service Unavailable Without Admin Rights

If you see 'service unavailable' when running commands in Command Prompt, and you don't have admi...