GC cannot be contacted.Gc needed to list the object group membership


Error scenario:

When you are working with dsa.msc, you check one member server, in Computer OU. When you check the member of option it hangs for few minutes and throw an error message ” GC cannot be contacted.Gc needed to list the object group membership”.
Root cause:

In the DNS, check the A entry in the GC . This can also be checked by issuing the command “nslookup gc._msdcs.Mydomain.com”.

Output for the nslookup command
“Server:  ADMaster.Mydomain.com
Address:  XXX.XXX.XX.141
Name:    gc._msdcs.Mydomain.com
Addresses:  XXXX:xXxx:XXXx::xXxx:198d
XXXX:xXxx:XXXx::xXxx:198e
XXX.XXX.XX.142
XXX.XXX.XX.141”.
There will be an unknown entry of A record or an non functional A record will be available in the GC which is not properly removed.  Hence this error occurs. Also if you enable IP V6 this problem will occurs.
Solution:
Try to remove unwanted A record in the GC and also in domain in the DNS server. Also uncheck the IPV6 option in the TCP properties.

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One Response to GC cannot be contacted.Gc needed to list the object group membership

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