Knowledgebase: Enterprise Server
When I try to synchronize with Active Directory, I get the error message that multiple connections are not allowed.
Posted by AceBIT GmbH, Last modified by AceBIT GmbH on 11 April 2018 17:29

You receive the following error message when you try to synchronize with Active Directory:

Mehrfache Verbindungen zu einem Server oder einer freigegebenen Ressource von demselben Benutzer unter Verwendung mehrerer Benutzernamen sind nicht zulässig.

Windows does not allow simultaneous connections of different users on the same computer to the domain controller. It is possible that your current computer is already connected to the server controller as User1 (for example, Windows Explorer uses a network shared folder on the server). Then if you try to connect to the server as User2, you get this error.  Try to use User1 account to avoid the problem. 

Another possible case: If you are trying to connect to the server from Computer1 as User1 but User1 is already connected to the server from Computer2. Again you may need first to disconnect User2 on Computer2 or alternatively use a different account.