Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Windows Update fails to check for updates or downloads get stuck, a misconfigured proxy is a c...

When running PowerShell scripts that perform network operations, you may encounter error code

You open Command Prompt, type a command, and get access is denied or permissio...

How to Fix Windows Security 404 Not Found Error
If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...

Fix PowerShell 'Could not load file or assembly' Error
When you run a PowerShell script or cmdlet and see an error like Could not load file or ass...

How to Fix Windows Activation Proxy Error
If you see "We can't activate Windows on this device because of a proxy error" or similar, your s...