If you would like to upgrade to the newest version of Gurobi Optimizer, please ensure that you have also updated your token server to the latest version.
How do I check the version of my token server?
Run grb_ts -version in the token server. You should see a message with the version of your token server.
Gurobi Token Server version 13.0.3
Copyright (c) 2026, Gurobi Optimization, LLCHow to upgrade the token server
- Stop the Gurobi token server with grb_ts -s.
- Check whether there are any custom settings in your license file (such as a custom PORT or PASSWORD) that you want to transfer to the new license file.
- Install the latest version of Gurobi Optimizer from the Download Center.
- Log into your account at gurobi.com and navigate to "Downloads & Licenses > Your Gurobi Licenses". Click the installation icon
on the correct license from the table of licenses.
- Copy the line with grbgetkey and the key code such as xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
- Retrieve the license file by running the command: grbgetkey xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx on your machine via either the Start/Run menu (Windows only) or a command/terminal prompt (any system).
- Start the Gurobi token server with grb_ts.
Note: If you use the grbgetkey command to retrieve the license, please ensure you are using the latest version (14.0.0) of grbgetkey. You can check the version by running grbgetkey --version.
Note:
- Token server licenses with a thread capacity require Gurobi Optimizer and the Token Server to both be version 13.0.1 or later. The Token Server refuses token requests from older clients.
- Token server licenses without a thread capacity keep working with older clients and servers.
- For more details, see How does thread-based capacity work for Single Use, WLS Single Use, and Floating Use licenses?.