HASP Dongle Installation on Windows Server 2012 R2 not working

Hello,
currently we use a network license dongle (HASP, red) installed on a Windows 2008 R2 server to license an accounting software (1c Enterprise) and it works fine.

But now we moved to a Windows Server 2012 R2 and can not get newtwork licenses anymore. We took the following steps

1. We connected the dongle to the new server
2. We installed latest Sentinel driver (7.41)
3. We installed latest HASP License Manager (8.32)

Both services are up and running and we can see the dongle in the device manager as "SafeNet Inc. HASP Key" and "SafeNet Inc. USB Key"

But when using thw Aladdin HASP Monitor the dongle is not shown and the clients don't get a license anymore

We checked Firewall settings on old and new server and they are the same.
We also set the DEP exception as mentioned in the Windows 7 installation guide.

What do we have to do to make it work. We want to shutdown the old server soon.

Thanks
Jürgen