Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Command Prompt Proxy Settings 502 Bad Gateway

If you see a 502 bad gateway error when using command prompt tools like curl, npm, or git, the pr...

Fix 'Connection Refused' in Windows Terminal to Remote Server

When you see 'connection refused' in Windows Terminal while trying to connect to a remote server ...

Fix Windows Security Offline Installer Fails

When installing Windows Security (formerly Windows Defender) offline, the installer may fail sile...

Fix Windows Activation Download Failed on Mac Boot Camp

You've installed Windows on your Mac via Boot Camp, but when you try to activate it, you see an e...

Fix Java JDK Not Recognized in Windows 10

You've installed the Java Development Kit (JDK) on Windows 10, but when you type java -vers...

Fix Remote Desktop Connection Refused: RDP Port Blocked
When you try to connect to a remote Windows machine and get a connection refused error, the RDP p...