If you use a floating license with Quartus® Prime Version 26.1, ensure that you use the most recent version of the FlexLM license daemon.
Important:
Questa® – Altera® FPGA Edition and
Questa® – Altera® FPGA Starter Edition require a separate license
daemon from the Altera FPGA software license daemon.
For more information about licensing, refer to Altera FPGA Software Installation and Licensing .