Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Windows Activation 502 Bad Gateway After Upgrade

After a Windows upgrade, you might see a '502 Bad Gateway' error when trying to activate. This us...

Fix Remote Desktop Credentials Permission Denied Error

You try to connect to a remote Windows machine via RDP, enter your username and password, but get...

Fix Windows Activation Dependency Conflict Error

You may see a Windows activation error that mentions a "dependency conflict" or "dependency servi...

Fix Microsoft Teams Camera Not Working with Virtual Background

You’ve set up a virtual background in Microsoft Teams, but your camera stops working or shows a b...

Fix npm install ENOENT Package.json on Mac

When you run npm install on a Mac and see an error like ENOENT: no such file o...

Windows Security Version Mismatch: Troubleshooting Checklist
If you see an error message saying Windows Security has a version mismatch, or the Security Cente...