Server web interface doesn't launch after a restart or upgrade

Symptoms

The TeamCity Server is started, but trying to access the TeamCity UI is not successful. The teamcity-server.log does not have any recent log records. The catalina.out shows a message stating Caused by: java.net.BindException: Address already in use: bind in the stacktrace

Cause

The specified port is already in use. This might be due to:

• Another application using the same port.
• The old TeamCity instance was not shut down properly.
• The OS has not released the resources.

Resolution

1. Confirm that the address is not being used by another legitimate application.
2. Depending on the exact cause of the specified port being taken, it may be necessary to terminate or kill the old instance or reconfigure the ports to make sure that no other application is using the port.