
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...
Software troubleshooting desk

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

When you try to download or update an app from the Microsoft Store, you might see error 0x80073cf...

You open Task Manager and see OneDrive using hundreds of megabytes of RAM, and then you get error...

You open Outlook, click Send/Receive, and wait. And wait. Emails trickle in or won't go out. This...

If Outlook stops responding at the "Loading Profile" screen and the process shows as outlook.exe ...

You see 'Sync paused' in OneDrive, but your internet connection is fine. This is a common frustra...