vCenter logon failed

Recently one of the domain controllers was down for maintenance.  During this downtime we noticed that we could not login to vCenter using Windows session credentials.  Is there a setting that ties this logon to a single domain controller?
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Bryant SchaperCommented:
I am not aware of a setting, but it may bind to one when it boots, have you tried rebooting it and see if it picks up another?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Do you have more than a single Domain Controller ?

Did you have any other issues with AD access ?

which logon server is used when you logi to vCenter Server.

Also why were your DC's down during Core Hours ?
please check if all the vmware services are running or not.
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NytroZAuthor Commented:
All of the VMware services were running.  I resolved a replication issue with the domain controllers and now we no longer experience the issue.
NytroZAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for torszula's comment #a40976509

for the following reason:

I can' t be certain as to why the replication issue resolved the problem but after it was resolved we can log in to vcenter while one or the other dc is down.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I think your AD issues, replication would have been the cause.

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NytroZAuthor Commented:
You are right!  I think I missed that in your answer.  I forgot about this question.  Thank you for pointing me in that direction.  I completely forgot about how I went in that direction since it was a few weeks back.
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