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

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

After a recent OneDrive update, you might see a blank white or gray screen instead of your files....

You open Command Prompt and see an error like "Command Prompt has been disabled...

You open File Explorer, type a filename or keyword into the search box, and nothing happens — or ...

After a Windows update, some users see a proxy error in Outlook—something like “Cannot connect to...

If you're stuck in an Outlook login loop on Windows 11—where it keeps prompting for your password...