Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

How to Fix 'Windows Security Blocked File from Opening' Error

You try to open a file, and Windows Security blocks it with a message like “Windows Security bloc...

How to Fix Windows Update Pending Install After Shutdown

You shut down your computer, expecting a quick start next time. Instead, you see "Pending install...

How to Fix Microsoft Store SSL Certificate Error

You open the Microsoft Store and see an SSL certificate error—something like "A problem with your...

Windows Terminal Proxy Settings Not Saving: Practical Fixes

You set a proxy in Windows Terminal's settings.json file, but after closing and reopening the app...

Troubleshoot 504 Gateway Timeout in Windows Security App

When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...

Enable File History Backup on Windows 10: Troubleshooting Guide
You set up File History on Windows 10, but backups aren't running, or the drive isn't detected. T...