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

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

How to Fix Windows Defender Stuck Loading in Safe Mode

If you've booted into Safe Mode and Windows Defender won't start, shows a loading spinner indefin...

Fix Windows Backup Error 0x80070001 After Update

After a Windows update, you might see backup error 0x80070001. This often means "Incorrect functi...

Fix Remote Desktop Connection Refused Authentication Error

You try to connect to a remote computer via Remote Desktop (RDP) and get an error like "Connectio...

How to Fix Microsoft Teams Audio Not Working

When Microsoft Teams audio stops working, you might hear nothing during calls, see a microphone i...

Fix Windows Search Access Denied for Administrator Account

Why You See 'Access Denied' as Administrator

You're logged in as an administrator, but Wi...