When using powershell commands to log into the ThinPrint Management Console the authentication fails. However, logging into the ThinPrint Management Console via GUI using the same credentials works fine.
There are several reasons that can influence the authentication via PowerShell.
One reason could be a wrong set up IIS authentication method for Anonymous Authentication in CCSRest. By default the ThinPrint License Server installer should set Anonymous Authentication to disabled, but for some reason this is not always the case.
Applies to product
ThinPrint License Server 10+
Disable Anonymous Authentication in IIS for CCSRest.