
Fix Outlook High CPU Usage Caused by Antivirus Scanning
Symptoms and Likely Cause
You notice Outlook consuming 50% or more CPU, making your syste...
Software troubleshooting desk

You notice Outlook consuming 50% or more CPU, making your syste...

You try to start a remote desktop session, but the terminal or Run dialog says something like

You enter your Office 365 credentials in Outlook, but it keeps asking you to sign in again. This ...

When a scheduled task fails with an error about expired credentials or a token that is no longer ...

When running a PowerShell script that writes to a log file, you may see an error like Acces...

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