There is an issue with SDK_dotnet Version 2.30 which provides the library NimbusAPI.dll with version 126.96.36.199.
The problem is specific to changes made in the 9.x versions of UIM / DX IM resulting is a failure of the probe to login to the nimbus.
Login failed: Faulty status in reply message; expected 0 (OK), got 12 (Login failed.).
Release : 9.2.0
Component : UIM - SDK_DOTNET
NimbusAPI.dll version 188.8.131.52