Software comparisons, alternatives, and tool decision notes.

Fix Windows Update Service Not Running Due to Group Policy

If Windows Update shows the service is not running and you suspect Group Policy, the problem is o...

How to Fix Nginx 'Upstream Connection Refused' Error

When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

Fix Nginx 403 Forbidden: Permission Denied Errors

You're trying to access a site served by nginx, but you get a 403 Forbidden ...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Fix DNS Probe Finished NXDOMAIN Error on Mac

You're browsing on your Mac and suddenly a site won't load, showing the error DNS...