
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...

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

You try to open Outlook and get the message: "The Outlook data file cannot be opened." This usual...

You're working in Chrome's developer tools or running a JavaScript app, and you see Module ...

You try to open or delete a file, and Windows says it's locked by Windows Security. This usually ...

When multiple people share a computer, or you need to keep work and personal browsing separate, C...