Software comparisons, alternatives, and tool decision notes.

Fix Windows Defender Real-Time Protection Not Running

You open Windows Security and see a yellow warning: "Real-time protection is off." Or you...

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

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

fatal: Unable to create &#...

Fix Windows 11 Installation Assistant Stuck at 99%

You're upgrading to Windows 11 using the Installation Assistant, and it gets stuck at 99% for...

Fix Nginx 502 Bad Gateway on Docker Ubuntu

You're running Nginx as a reverse proxy inside Docker on Ubuntu, and suddenly you see

Fix VS Code Source Control Not Detecting File Modifications

You edit a file, save it, but the Source Control panel in VS Code shows nothing. No pending chang...

How to Fix Docker Login Access Denied Error

When you run docker login and get an 'access denied' error, the problem is u...