Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Windows Defender Real-Time Protection Not Working with Network Error

You open Windows Security and see a yellow warning that real-time protection is off. When you try...

Fix Windows Update Clean Up Tool Not Working

You run Disk Cleanup, check "Windows Update Cleanup", but nothing happens—or the option is missin...

Command Prompt Troubleshooting Checklist for Beginners

When your Windows computer starts acting up—slow performance, error messages, or network problems...

Fix 'Not Recognized as Internal or External Command' Error

You type a command in Command Prompt and see "'command' is not recognized as an internal or exter...

Maven Dependency Resolution Fails in CI Pipeline: How to Fix

You push a commit, the CI pipeline starts, and minutes later you see Could not resolve depe...

Fix Windows Defender 504 Gateway Timeout & Permission Denied Errors
You open Windows Defender Security Center and see "504 Gateway Timeout" or "Permission Denied" er...