UaExpert won't start

[ThiloK]

Hello,

newly while starting UaExpert (latest build) I get an error message.
"Could not initialize OPC UA platform layer (error=0xffffffffffffffff)."
I tried it on several PCs with several users.

Lately our company stiwched from Win2012 Server +AD to Linux and Samba AD.

Any idea how this could be fixed?