If there is a firewall running, contact your System Administrator to open the necessary ports in the firewall. These ports are specified in the license file hosted on the license manager server. The license manager communicates on two ports that must be opened through the firewall(s). However, each different kind of license has a limitation on the number of simultaneous activations that you can have on different hardware. Check if there is a firewall(s) between the MATLAB client and the license manager server.If the SERVER line differs it may cause the client to contact the wrong server/port. Verify that the SERVER line of the network.lic on the client matches that of the license.dat file on the server itself.It also covers important post-installation steps, such as setting up the server for the first time and creating. You can replace the hostname in the server line of the network.lic with the IP address as a workaround This video takes you through the steps of obtaining a license from the MathWorks License Center, followed by installing the network license server, MATLAB Production Server, and whichever versions of MATLAB Runtime are needed. NOTE: If you know the IP address of the server and are able to ping that, the issue more lies within the DNS configuration of your network. Manage Licenses for MATLAB Production Server The Network License Manager manages MATLAB® Production Server licenses. Right click, CTRL-click, or two-finger click on the MATLAB icon in your Applications folder and select 'Show Package Contents.' In the folder that opens up, open the 'licenses' folder to see your license files. Note: Always run at least the latest version of the. To download the latest license manager, click the platform that corresponds to the license server you are using. You must also include the -c option to specify the license file to use. License files are stored inside the MATLAB application package. To integrate MathWorks products into an already established license-management scheme, you can copy the MathWorks license management daemons (lmgrd and mlm) onto your system. The -a option requests a verbose listing. Contact your network administrator to resolve this issue. For example, to run a status check of the network license manager, open a DOS command window and run lmutil specifying lmstat as an argument: lmutil lmstat -a -c 'C:\Program Files\MATLAB\ R2023b \etc\license.dat'. If this fails you may have a networking error that is preventing the client from communicating with the license manager server. Verify communication by pinging the license manager server from the client with the following command: ping where is the hostname of the server machine. I work for a large company and use Matlab on my laptop with NNU license (license server is on company license server). This video takes you through the steps of obtaining a license from the MathWorks License Center, followed by installing the network license server, MATLAB Production Server, and whichever versions of MATLAB ® Runtime are needed. If you require a Virtual Private Network (VPN) to connect to your company/school network that hosts the Network License Manager, make sure that you are connected to the VPN.If you receive this error on a client installation of MATLAB:
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