Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If your Windows Security (formerly Windows Defender) virus scan takes forever or slows down your ...

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

After a Chrome update, you might encounter an error message like "chrome module not found" or "Fa...

You may see an error like “Windows activation path not found in registry” when trying to activate...

If Windows Update hangs, returns error codes like 0x80070002 or 0x800f0900, or simply refuses to ...

If you see a message that Windows Defender is not running or the security center shows it's off, ...