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Consider the following scenario:

  • You implement the German version of Microsoft Skype for Business Server 2015 in a German language operating system of Windows Server.

  • You configure a watcher node test user by using the Set-CsUserTestCredential cmdlet.

For example:

Set-CsTestUserCredential -SipAddress "" -UserName "contoso\user" -Password "<Password>"

In this scenario, you receive an error message that resembles the following:

Set-CsTestUserCredential : Fehler beim Festlegen der Anmeldeinformationen f.r Innere Ausnahme: Microsoft.Rtc.Management.SyntheticTransactions.CredentialManagement.NetworkServiceImpersonator+NetworkServiceImpersonatorException: Fehler beim Annehmen der Identit.t des Netzwerkdienstkontos. Fehlerdetails: Es wurden keine Prozesse im Besitz von 'NT Authority\Network Service' gefunden..


To work around this issue, you can use the English version of Skype for Business Server 2015 and Windows Server operating system.


To fix this issue, install the January 2019 cumulative update 6.0.9319.537 for Skype for Business Server 2015, Core Components.

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