A network.lic-file has to be placed within the application folder \ licenses, in my case: C:\Program Files\MATLAB\R2012a\licenses   http://www.mathworks.nl/support/solutions/en/data/1-63ZIR6/index.html   This license-file has the following format   SERVER server_name hostid port#  USE_SERVER   http://www.mathworks.nl/support/solutions/en/data/1-99R6CN/index.html?solution=1-99R6CN   where servername and host id can be found on the Flexlm Licenses Detail Website (Server: @ )   The host id seems to be the  volume serial number of the C:\ drive  (in cmd:> "vol c:" Volumeseriennummer (without the dash )   http://www.mathworks.nl/support/solutions/en/data/1-171PI/