Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see a OneDrive sync error that says "file in use" or "the file is open in another program." T...

After a Windows update, you might see "Access Denied" errors when trying to open Windows Security...

If the Microsoft Store won't load, download apps, or update, a misconfigured proxy is often the c...

If you see "Windows Defender path not found" when trying to open Windows Security or run a scan, ...

When you see "Windows activation module not found" with error code 0x8007007b, Windows cannot loc...

If you need to route your Chrome traffic through a proxy server—for privacy, network restrictions...