
How to Fix Outlook High CPU Usage Caused by Add-ins
If Outlook is using 50% or more of your CPU for no obvious reason, an add-in is often the culprit...

If Outlook is using 50% or more of your CPU for no obvious reason, an add-in is often the culprit...

You try to open a file on a BitLocker-encrypted drive and get an error saying the file is locked ...

When you try to connect to a local service (e.g., a web server, database, or custom application) ...

You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...

If you're seeing a Windows activation error that says something like "We can't activate Windows o...

You open Outlook in Microsoft 365 and see a '404 Not Found' page. This usually means Outlook can'...