The minimum system requirements for the license server computer are based on the requirements for installation of the Sentinel RMS License Manager and the Golden Software License Administrator.

License server operating system requirements:

• Windows Server 2012, Windows Server 2016, Windows Server 2019, Windows 8/8.1 (excluding RT), Windows 10, Windows 11 or higher
• 32-bit or 64-bit operating system
• At least 512MB RAM
• At least 20MB hard disk space

Network requirements:

• The license server firewall must allow incoming traffic on UDP port 5093.
• The license manager uses IPv4 by default but can be configured for IPv6. See Concurrent Licensing Over An IPv6 Network.
• The client computers running the licensed program must be able to either resolve the name of the license server or communicate directly by the server's IP Address.  This can work over local networks, VPN connections and over the public Internet as long as the client computer can reach the server computer by name or IP address, and UDP port 5093 is open.
• Communication between the client and server is not encrypted.

Software requirements:

• Sentinel RMS License Manager, version 9.7 or newer - download here
• Golden Software License Administrator - download here

If the license server will be running on a virtual machine, see the article Can I Use A Virtual Machine For My Concurrent License Server?

Be careful when installing the Sentinel RMS License Manager on a server that is already running the Sentinel RMS License Manager and serving network licenses for a different software vendor.  You can use an existing installed Sentinel RMS License Manager if its version is 9.7 or greater.

Only one Sentinel RMS License Manager can be running on a server, but it can manage licenses for multiple vendor's software.  But be aware that if one of the vendors has set custom parameters it may affect all the software licenses on that server.

See also:

• Update the License Manager on your license server
• Can I Use A Virtual Machine For My Concurrent License Server? 
• Concurrent Licensing Over An IPv6 Network
• How Do I Set Up My License Server For Strater, Surfer And Grapher?
• How Do I Activate My Concurrent-Use Golden Software License? 

Updated December 16, 2021