Checklists for software errors, setup, and tool workflows.

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Fix Windows Defender High CPU Usage When Scan Stuck

If Windows Defender is using nearly 100% CPU and a scan appears stuck (e.g., progress bar frozen ...

Fix Microsoft Teams Not Loading on Windows 10

When Microsoft Teams fails to load on Windows 10 – the app opens but shows a spinning circle, a w...

GitLab Runner Not Picking Up Jobs: Common Fixes

You've set up a GitLab Runner, but jobs sit in the queue with no signs of being picked up. This g...

Fix Error 0x80070643 Windows Update Permission Denied

You see error 0x80070643 when trying to install Windows updates, often accompanied by a message a...

Fix Docker Build: Repository Does Not Exist or Requires Login

You run docker build and get an error like failed to solve: repository does no...

How to Allow an App Through Windows Defender Firewall
If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....