You need to modify the firewall settings to allow traffic through fixed TCP/IP port. The following instructions apply to Windows 7, 8, 8.1, 10 and Windows Server 2012.
To allow traffic in fixed TCP/IP ports in Windows 7, 8, 8.1, 10 and Windows Server 2012 on the license server computer:
Use the command line command netstat -anp TCP to find out which ports are in use.
The numbers in the Local Address column after the colon (:) are the port numbers that are in use.
By default, the path is ..\TeklaStructures\License\Server.
The Automatic installation option sets the port to 27007.
Defining the TCP/IP port number on the VENDOR row may slow down the restart time of Tekla Structures Licensing Service.