Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You try to join a meeting or share a file, and Teams shows an error about version mismatch. This ...

You open Windows Security and see "Connection refused" or "Something went wrong. Try reopening Wi...

You're in a meeting or trying to send a message, and Teams shows a network error. The app might s...

If you see an error saying the Windows Activation service is not running, your system may not be ...

You downloaded the Windows Security offline installer but it won't run, hangs, or throws an error...

If you're running Outlook on Ubuntu (via Wine or a virtual machine) and encounter error 0x8004010...