Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see error 0x8004de40 when OneDrive tries to sync or update. The error usually means a credent...

If you see 'Windows Search token expired' in Outlook 2016, it usually means the search index is c...

If Windows Search stops working and you see an SSL certificate error in the event logs or search ...

If you get a DNS error when searching in Windows 10—like "DNS server not responding" or "Server D...

When you try to search for a file in Windows and see 'Permission Denied' or 'Access Denied', it u...

When Windows Security refuses to update online, the offline installer can be a lifesaver. This gu...