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The processing of Group Policy failed. Windows could not authenticate to the Active Directory service on a domain controller. (LDAP Bind function call failed). Look in the details tab for error code a

Posted on 2016-07-21
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Last Modified: 2016-08-19
Dear All,
I received this error message from a windows server 2008 r2 it is used a virtual server
can someone help?
Thank you in advance
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Question by:MarK PercY
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by:Antzs
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Is there a firewall between the Windows server 2008 r2 and the Domain Controller?  Some ports may be blocked and not allowing authentication.
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by:MarK PercY
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Hi Anthony,

No there isn't have you experienced this or could there be another issue

Many thanks

Mark
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Antzs earned 500 total points
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I never experienced this myself.  But not being able to authenticate usually mean there is some blocking or the server is not able to reach the DC.

Does the server have multiple network connection?  Can it ping the DC?
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by:MarK PercY
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Very helpful Thank you
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by:Antzs
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Was the issues resolved?  Did you find out what was the cause?
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by:MarK PercY
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HI Anthony,
The issue was because the NTP server settings were not setup correctly?
Thank you for your response though
Mark
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