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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
Medium Priority
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
Question by:MarK PercY
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Expert Comment

ID: 41722266
Is there a firewall between the Windows server 2008 r2 and the Domain Controller?  Some ports may be blocked and not allowing authentication.

Author Comment

by:MarK PercY
ID: 41730773
Hi Anthony,

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

Many thanks


Accepted Solution

Antzs earned 2000 total points
ID: 41732229
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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Author Closing Comment

by:MarK PercY
ID: 41760762
Very helpful Thank you

Expert Comment

ID: 41761806
Was the issues resolved?  Did you find out what was the cause?

Author Comment

by:MarK PercY
ID: 41762292
HI Anthony,
The issue was because the NTP server settings were not setup correctly?
Thank you for your response though

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