Gurobi Compute Server 8+ is able to work with multiple Gurobi releases on the client side.
The server will automatically select the appropriate runtime, depending on the version of the Gurobi Optimizer library used by the client program. Runtimes can be deployed and undeployed on demand:
The most common reason for this error message is a newer version on the client side without a corresponding runtime on the server side. Most likely this is because the client has been updated but the server was not.
A Gurobi Compute Server release contains all runtimes for all supported client releases by default. Therefore we always recommend to upgrade to the latest server release even if client machines still run a previous version.