Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

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How to Fix Windows Activation Not Working on Ubuntu

If you're running Windows on a machine that also has Ubuntu, you may see an activation error. Thi...

Fix High CPU Usage by Antivirus Scanning PowerShell

If you notice that PowerShell (powershell.exe or pwsh.exe) is using high CPU, and you have an ant...

Fix Docker Container Crash Loop with Exit Code 1

You start a Docker container and it immediately stops, then restarts, stops again—the classic cra...

Fix Windows Search Authentication Failed in Windows 11

If you see an 'authentication failed' error when using Windows Search in Windows 11, the search i...

Fix SSH Host Key Verification Failed in Ansible

When running Ansible playbooks or ad-hoc commands, you might see the error Host key verific...

Checklist for Windows Update Connection Refused Issues
When Windows Update fails with a "connection refused" or "server refused connection" error, it us...