Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a Chrome update, your profile might fail to load, leaving you stuck at a blank window or an...

You see an error saying the Windows activation file is locked, or activation fails with a file ac...

You open Outlook and get an error about a dependency conflict, or Outlook crashes when you try to...

If you've disabled Cortana and find that Windows Search no longer returns results or runs slowly,...

Windows Search indexing can get stuck for various reasons, leaving your file searches incomplete ...

If you see error code 4 when updating Chrome, it usually means the updater couldn't write to the ...