
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 Event Viewer, navigate to Windows Logs > Security, and see nothing recent—or nothing at ...

You try to start Windows Defender, but it fails immediately with error 577, often accompanied by ...

You open Windows Security (formerly Windows Defender Security Center) and see only a blank white ...

If you're setting up an IMAP account in Outlook and running into connection errors, sync failures...

You open the Microsoft Store and it hangs on the loading screen—spinning circle, no content. This...