Issue
When starting Tableau Server, the following error might occur:*** Tableau Server Load Balancer requires port 80,
in use by process 4.
*** Error: Tableau Server cannot start due to blocked ports.
in use by process 4.
*** Error: Tableau Server cannot start due to blocked ports.
Running tabadmin status -v shows server status as Degraded and that Apache Load Balancer was not started.
Netstat shows that port 80 is being used by the system PID 4 (Windows kernel process).
Netstat shows that port 80 is being used by the system PID 4 (Windows kernel process).