Article ID: 2897719 - View products that this article applies to.
When a user tries to remove an Exchange ActiveSync device by using Microsoft Outlook Web App (OWA) or Microsoft Exchange Management Shell, the user receives the following error message:
deviceID contains invalid '-'
This issue occurs if the user has two ActiveSync objects with a duplicated deviceID, and one of the objects has an identity attribute that contains "CNF: guid."
This is a known product bug in Exchange Server 2010. When multiple Client Access Server (CAS) servers use multiple domain controllers, a CNF object may be created as a duplicate of an existing device. This issue occurs during replication of Active Directory objects between multiple domain controllers.
To resolve this issue, use Active Directory Service Interfaces Editor (ADSI Edit) to remove the duplicate device. To do this, follow these steps.
Warning Using ADSI Edit incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems that result from the incorrect use of ADSI Edit can be resolved. Use ADSI Edit at your own risk.
Article ID: 2897719 - Last Review: October 10, 2013 - Revision: 1.0