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

Fix Windows Security Auto-Start Not Working After Update

After a recent Windows update, you might notice that Windows Security (formerly Windows Defender)...

Fix PowerShell 502 Bad Gateway After Windows Update

After a recent Windows update, you may encounter a 502 Bad Gateway error when using PowerShell to...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Fix FFmpeg Audio Sync Issues After Conversion

You encoded a video with FFmpeg, but the audio drifts out of sync—often noticeable as the video p...

How to Fix Nginx 404 Not Found with try_files Directive

You've set up your Nginx server block, but visiting your site returns a 404 Not Found error. The ...

Chrome Sync Not Working? A Practical Troubleshooting Checklist

You open Chrome on another device and your bookmarks, passwords, or history aren't there. Sync se...