
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...

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

You open Outlook and see: "Cannot start Microsoft Outlook. Cannot open the Outlook window."

You open PowerShell and see the error "PowerShell failed to initialize properly". This u...

You might see a Windows Defender rate limit error when scanning files or updating definitions. Th...

You might see Windows Defender consuming a lot of memory, and then get error code 0x80070002 when...

If you see an 'Access Denied' error when trying to open a OneDrive shared folder, the issue is us...