Article ID: 970996 - Last Review: July 20, 2009 - Revision: 1.2

You receive an error message that contains error code 3221685941 when you install Exchange Server 2010

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SYMPTOMS

When you install Microsoft Exchange Server 2010, you may receive the following error message if a domain controller is not available:
An error occurred with error code '3221685941' and message 'The interface is unknown.'
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CAUSE

This problem occurs because the Exchange Server 2010 setup process cannot contact a domain controller. This problem occurs because the domain controller does not respond to a NETLOGON call from the Exchange server.
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RESOLUTION

To resolve this problem, make sure that the domain controller is online and available, and then run the Exchange Server 2010 setup again.
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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APPLIES TO
  • Microsoft Exchange Server 2010 Coexistence
  • Microsoft Exchange Server 2010 Enterprise
  • Microsoft Exchange Server 2010 Standard
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Keywords: 
kbexpertiseinter kbinfo kbsurveynew KB970996
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