Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

How to Fix MySQL Connection Refused Error

When you see "connection refused" while trying to connect to MySQL, it usually means the server i...

Remote Desktop Backup Restore Tool Not Working: Fixes

You try to restore a backup over a remote desktop session and nothing happens, or you get an erro...

Fix Windows Defender Module Not Found Error

You open Windows Security and see an error: "Module not found" or "Windows Defender module not fo...

Fix 502 Bad Gateway After Reboot in Command Prompt

If you see a 502 Bad Gateway error after rebooting your server or workstation, i...

Fix Windows 10 Activation SSL Certificate Errors

When trying to activate Windows 10, you might see an error like "We can't activate Windows on...

Fix Windows Search 404 Error by Rebuilding the Index
When Windows Search throws a "404 error" or returns no results, the search index is often corrupt...