Weird Port in use issue under Windows 10

Question

I encountered a very common issue Port 8080 already in use when starting a Jakarta EE application server, such as GlassFish, WildFly, etc.

But I tried to find the application which use this port, failed to get the result.

• netstat -aon| findstr :8080 get empty result, either normal users and administrator.
• In Listening Ports view in Resource Monitor window, can not find an application use this port.
• Used tools like TCPView in a visual UI, also can not find any application is using this port.

I wonder is there any other reason to cause this port not available?