Can ST10 and NX 10.x both use the same FlexNet software version on the same server?
Solution Solid Edge ST10 uses FlexNet 188.8.131.52. Unfortunately the NX 11 daemon is not compatible with FlexNet 184.108.40.206. As NX 11 is not compatible, there is no expectation for NX 10 to work either.
As ST10 and NX 10 are both not compatible with FlexNet 220.127.116.11, then you will have to install both versions of Flex onto your license server and configure each license server to point to the appropriate Flex version.
Hardware/Software Configuration Platform: INTL64
OS Version: 1064