Hybrid Wizard schlägt fehl

Hallo Zusammen,

ich bin gerade dabei eine Hybrid Umgebung zu konfigurieren und bekomme folgende Fehlermeldung:

The connection to the server 'SERVER' could not be completed., The Mailbox Replication Service was unable to connect to the remote server using the credentials provided. Please check the credentials and try again. The call to 'https://Mailbox.svc' failed. Error details: The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'. --> The remote server returned an error: (401) Unauthorized.. --> The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'. --> The remote server returned an error: (401) Unauthorized., The call to 'https://Mailbox.svc' failed. Error details: The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'.
--> The remote server returned an error: (401) Unauthorized.., The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'., The remote server returned an error: (401) Unauthorized.
OriginalFailureType: WebException, WellKnownException: MrsHttpUnauthorizedError MRSRemote
Remote stack trace:
at System.Net.HttpWebRequest.GetResponse()

Zu meinen Lösungsansätzen:
Hybrid Wizard neu installiert
Anmeldeinformationen erneut kontrolliert (stimmen)
Oauth geprüft (ist auch an)
MRS aktiv (ja)


Evt hat noch jemand einen Lösungsansatz wo das Problem liegen könnte.

VG