Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Fix 'Windows Defender Firewall Has Blocked' Error

You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...

Windows Activation Failed Due to Blocked Key: Fixes That Work

You see “Windows activation failed due to blocked key” – it usually means the product key you’re ...

Fix Windows Search SSL Certificate Error via Registry

If you see an SSL certificate error when using Windows Search (e.g., searching in Outlook or File...

Fix Windows Terminal 404 Not Found Error Code

If you're seeing a '404 Not Found' error when launching Windows Terminal, it usually means the ap...

Fix PowerShell Execution Policy Restricted Error

When you try to run a PowerShell script and see an error like “cannot be loaded because r...

Windows Update Dependency Conflict Cleanup Checklist
You run Windows Update, it fails, and the error mentions a dependency conflict. This usually mean...