Open Software Solutions

Source: Microsoft Support

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In Windows 2008, when you use VMConnect  and Remote Desktop Connection to connect a Hyper-V Guest, after you enter your logon credentials, you may receive the following error:

No authority could be contacted for authentication. For assistance, contact your system administrator or technical support.

This problem occurs because the version number of the KRBTGT account increases when you perform an authoritative restoration. The KRBTGT account is a service account that is used by the Kerberos Key Distribution Center (KDC) service.

To resolve this problem, apply the Hotfix mentioned in this section to all the Windows Server 2003-based domain controllers in the domain. This Hotfix prevents the problem before you perform an authoritative restoration. This Hotfix also fixes the problem when you have already performed an authoritative restoration

 

939820 Error message when you try to use Remote Desktop Connection to connect to another Windows Vista-based computer in Windows Vista: No authority could be contacted for authentication

/939820 (http://support.microsoft.com/default.aspx?scid=kb;en-us;939820)

Prerequisites

To apply this hotfix, you must have Windows Server 2003 Service Pack 2 installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 (http://vkbexternal/VKBWebService/ViewContent.aspx?scid=kb;EN-US;889100&PortalId=1) How to obtain the latest service pack for Windows Server 2003

You must restart the computer after you apply this Hotfix.

This Hotfix does not replace any other hot fixes.

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