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

Check Which Process Is Using a Port on Windows

When a service or application fails to start because a port is already in use, you need to identi...

Fix Windows Update Setup Failed Rollback Changes

When a Windows update fails and you see "Undoing changes" or "We couldn't complete the updates, u...

BitLocker Recovery Key Not Accepted: Fix Authentication Failed Error

How to Fix BitLocker Update Error on Windows 11

If you see a BitLocker error during a Windows 11 update—like “BitLocker encryption suspended” or ...

Fix Nginx 502 Bad Gateway for WordPress

If you see a 502 Bad Gateway error when visiting your WordPress site running on Nginx, it usually...

How to Fix Git Pull Merge Conflict Not Working

When you run git pull and get a merge conflict, the pull itself doesn't fail—it stop...