I am having problems with Unity user applications, speficially related to calling up the Media Master controls in either ViewMail for Outlook of Unity PCA.
It appears to be DCOM related, since the authentication of users in AD is happening, but when you go to play a message (using TRAP), users are prompted to enter their AD credentials.
The user enters their correct credentials, but then just get re-prompted to enter them again.
In PCA, the user can log in, but then receive an error indicating that the Voice Server is unavailable.
During these failures, the System Event Event Log on the Unity Server racks up a couple of DCOM errors:
For PCA: The machine wide limit settings do not grant Remote Access permission for COM Server applications to the user NT AUTHORITY\ANONYMOUS LOGON SID (S-1-5-7).
For ViewMail: The machine wide limit settings do not grant Remote Activation permission for COM Server applications to the user DOMAIN\Username SID (S-1-5-21-182728277-828849442-1105138716-16585). This security permission can be modified using the Component Services administrative tool.
I have added my individual account, the Domain Users group, the Everyone group, and ANONYMOUS LOGON to DCOM with full access and activation rights.
Still, I receive these errors. However, if I add any user account to the Domain Admins group, everything works fine.