Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Windows Update Component Cleanup Error 0x800f081f

When running Disk Cleanup or the Deployment Imaging Service and Management Tool (DISM) to remove ...

Windows Security App Not Working After Reset? Try These Fixes

If you recently reset your Windows PC and now the Windows Security app won't open, shows a bl...

How to Enable Windows Defender Real-Time Protection via Command Line

If you need to turn on Windows Defender real-time protection but can't access the Settings ap...

Fix Windows Security App Access Denied Error

When you open Windows Security (formerly Windows Defender Security Center) and see an 'Access...

Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer

When you see fatal: unable to access '...': SSL certificate problem: unable to get ...

Fix Windows Update Error 0x800f081f Stuck or Failing
You see error 0x800f081f when Windows Update gets stuck or fails to install an update. This usual...