• Yes, that is configured correctly in each of the instances. We can not seem to register the SPNs for multiple instances. The First one went fine but when we try the next one, it says Duplicate SPNs.

    We tried specifying a different port number in the URL for each environment, and then setting the SPN on the report Server Service account, using the specified port number and we may have the syntax wrong, even though we were using the setspn instructions from Microsoft.

    Example:

    Setspn -s http/MyReportServer.MyDomain.com:80 MyDomainUser

    Setspn -s http/MyReportServer.MyDomain.com:8080 MyDomainUser

    Setspn -s http/MyReportServer.MyDomain.com:8081 MyDomainUser