Knowledge base for software setup, errors, and daily tool work.

Fix Windows Update Error 0x80070002 on Windows 10

When Windows Update fails with error 0x80070002, it usually means the system can't find the u...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

Fix Docker Nginx 502 Bad Gateway After Restart

After restarting your Docker containers, you might see a 502 Bad Gateway error when accessing you...

Fix Missing Taskbar Icons After Uninstalling a Program

You uninstall a program, and suddenly some taskbar icons disappear—even for apps you didn't r...

Fix Windows 11 No Internet but Wi-Fi Connected DNS Issue

You see the Wi-Fi icon connected with full bars, but apps, browsers, and system updates all repor...

Fix Windows 11 Update Stuck at 0% with Low Disk Space

You're trying to install a Windows 11 update, but it's stuck at 0% for a long time. One f...