Error by connection to Dongle in Windows 2016


OS: Windows Server 2016 Standard (all Updates)

AwUsbCfg.exe Run OK
Edit > Discovery Liste Connection to RealPortUSB Multi-Host Hub (14 port) OK
Edit > Connection List Connection to a Port OK
Connect OK

awusbview.exe Run OK

Problem: The connected port is displayed with an exclamation mark on a yellow background (circle). Unfortunately I could not find the meaning in the manual. The dongle can not be addressed by the software.

What is the meaning of the exclamation point?
How do I get this obvious bug fixed?