Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Task Scheduler appears stuck on the 'loading' screen every time you restart your computer, you...

Windows Update can get stuck or fail with errors like 0x80070002 or 0x8024401c when the update ca...

When you try to activate Windows or reinstall it using a product key, you might see an error like...

If you open Windows Defender Security Center and see only a blank white or gray screen, the inter...

If Edge is crashing, running slowly, or not syncing correctly, start with this checklist. It cove...

You open Windows Security and see 'Error 502 – Bad Gateway.' This usually means Windows Defender ...