Obtaining and Configuring Licenses > Using the License Server Manager
  
Using the License Server Manager
The license server manager handles the initial contact with your PTC software that uses FlexNet licensing. It passes the connection to the appropriate vendor daemon. A license server manager serves the following purposes:
Starts and maintains vendor daemons for serving license rights from different software.
Transfers specific software requests to the correct vendor daemon.
There are two versions of the license server manager for license administration:
lmadmin—Uses a graphical user interface (GUI)
lmgrd—Uses a command-line interface
PTC currently ships with its products a license server manager based on lmadmin for the Windows platform and lmgrd for all other platforms. If you are using an existing license server with ptc_d vendor daemon of version 11.13.x.x or earlier, you will need to upgrade to the latest version.