Unable to start
MSSQL SERVER2012 , following error can be found in
Event Viewer :
Server TCP provider failed to listen on [ 'any' <ipv6> 1433]. Tcp port is already in use.
Another MSSQL server uses TCP port 1433.
According to below article for
MSSQL SERVER2012 change TCP port from 1433 to another one, for example 49602.