Checklists for software errors, setup, and tool workflows.

Fix Docker Build Error: 'failed to solve: manifest not found'

You run docker build and get an error like:

failed to solve: error fetching ...

Fix Putty Connection Refused on Port 22

You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...

Fix Microsoft Store 'Service Unavailable' Error on Windows 11

When you open Microsoft Store on Windows 11 and see a 'Service Unavailable' message, it usually m...

Fix Microsoft Teams 'Service Unavailable' Network Issues

When Microsoft Teams shows a 'service unavailable' error, it's often a network issue rather than ...

Fix Windows Defender Real-Time Protection Stuck on Scanning

If Windows Defender's real-time protection appears stuck on 'Scanning' and never completes, it ca...

Fix Windows Update Error 0x8024401c Due to Proxy Permission Denied

If you see error 0x8024401c when checking for Windows updates, it usually means the update servic...