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

How to Fix OBS Virtual Camera Not Showing Up

You've installed OBS Studio, set up your scenes, and want to use the virtual camera in Zoom, Disc...

Fix VMware Network Adapter Driver Not Installed Error

You launch a VMware virtual machine and see a message that the network adapter driver is not inst...

Fix Maven Dependency Resolution Failed in IntelliJ

How to Fix Windows 11 Activation Error 0xc004c003

If you see error 0xc004c003 when trying to activate Windows 11, it usually means the activation s...

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...