Checklists for software errors, setup, and tool workflows.

Fix OneDrive Token Expired Error (0x8004de40)

You open OneDrive and see an error like “Your token has expired” or code 0x8004de40. This usually...

Fix 'Outlook Module Not Found' Registry Error

When you see an error that says "Outlook module not found" or "Cannot find the Outlook module" du...

Fix Microsoft Teams Proxy Error After Update

After a Microsoft Teams update, some users see a proxy error when trying to sign in or connect. T...

Fix 'File Locked by Windows Security Cannot Delete'

You try to delete a file, and Windows tells you it's locked by Windows Security. This often happe...

Fix Microsoft Teams Version Mismatch Update Required Error

Understanding the Error

When you see 'version mismatch update required' in Microsoft Team...

How to Fix Microsoft Teams 404 Error: Step-by-Step Guide

If you're seeing a 404 error in Microsoft Teams—often when trying to open a file, channel, or tab...