
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...

If Windows Defender won't open, stops responding, or fails to update, you're not alone. This guid...

If you see a DNS error in Windows Security—like 'DNS resolution failed' or 'We can't connect to t...

If you’re typing in the Outlook for Mac search bar and getting no results (or stale results), it’...

If you've reset your Task Scheduler settings—either intentionally or after a system restore—you m...

You downloaded the Outlook offline installer but setup fails, hangs, or gives an error on Windows...