Exchange 2010

Dear Experts,

I have created two vms VM1- DC20008, AD DS

VM-2  Windows 2008 member server. I have created a user account named exadmin this account  is the member of domain admin, Enterprise admin and Schema admin. I logged in to the VM2 with exadmin account and tried to Install exchange 2010 setup. I have installed all the prerequisites before that. When I am trying to install exchange 2010 in the member server, I am getting the below error.

Hub Transport Role Prerequisites   Failed
Active Directory does not exist or can not be contacted
You must be a member of "Organization management" Role Group or "Enterprise admin" Group to continue

Setup encountered a problem while validating the state of active directory. Active directory operation failed.

JJ KRWindows System administratorAsked:
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Miguel Angel Perez MuñozCommented:
I suggest you:

Review your DNS configuration on Windows 2008 Server, ensure DNS configured are correct (domain controllers).
Did you logout and logon again after give permissions to exchadmin user?
StuartTechnical Architect - CloudCommented:
Please confirm you have installed all the pre-requesites including RSAT-ADDS

Import-Module ServerManager

Add-WindowsFeature NET-Framework,RSAT-ADDS,Web-Server,Web-Basic-Auth,Web-Windows-Auth,Web-Metabase,Web-Net-Ext,Web-Lgcy-Mgmt-Console,WAS-Process-Model,RSAT-Web-Server,Web-ISAPI-Ext,Web-Digest-Auth,Web-Dyn-Compression,NET-HTTP-Activation,RPC-Over-HTTP-Proxy -Restart

then try again

If this doesn't resolve the issue please post the Exchange setup logs for review - C:\ExchangeSetupLogs\ExchangeSetup.log
Brando PeterCommented:
Hi Biswajeet,

It sounds like Exchange setup is unable to contact AD. The curious thing is that you're still able to logon to the domain from that member server - but that can be explained by cached credentials.

Have you checked your IP configuration? Ensure that the member server IP address is an appropriate one and that the preferred DNS Is pointing to the DC. Next, open command prompt and run the following:

If there's no result, check to see that you haven't change the virtual network by mistake on either of the VMs.

Best regards,
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JJ KRWindows System administratorAuthor Commented:
HI Brando Peter,

Thanks for reply.  I did as per your suggestion     nslookup

and getting DNS request Time out
 Server: Unknown
Address: 192.xxxx

Name - bbi-dc01-2k8.testxxxxxxx
Address 192.168.xxxxxxx
JJ KRWindows System administratorAuthor Commented:
Hello Brando Peter,

One more thing I have not crated any reverse lookup zones in my dns. Is it necessary to create reverse lookup Zones to install exchange.
Miguel Angel Perez MuñozCommented:
No, reserve resolution is not required, but INMO you have any missconfiguration on DNS because you must not receive timeout.
StuartTechnical Architect - CloudCommented:
The same exchange setup logs should give you more of an idea give them a read
Brando PeterCommented:
A reverse lookup zone isn't necessary for forward DNS queries to work. Your result means that the member server is unable to query the DNS server - either through a network issue (could be that TCP/UDP 53 is blocked between the two servers - disable WIndows FIRewall on both and check again) or a DNS server issue.

Is it pointing correctly to your DC IP Address?
Server: Unknown
Address: 192.xxxx

And you can ping it right? If it's pingable, then the DNS service is probably down on the DC. Check the DNS Server service on the DC, if it is already running, restart it and try run the nslookup again.

Otherwise, just have a quick look at the DNS management console on the DC to see if everything seems alright. You should see your domain under the forward lookup zone and the DNS records for your DC and member server. ALSo check to see that a sub domain called is there as well - and it should have SRV Records inside.
JJ KRWindows System administratorAuthor Commented:
Hi all,

I have checked  DNS is configured properly. I can ping both the servers. I am installing exchange 2010 using administrator and getting the below error.

" Setup encountered a problem while validating the state of active directory. Active directory operation failed on bbi-ex2010\administrator is invalid.

You must be logged in as exchange organization administrator to install or upgrade.
JJ KRWindows System administratorAuthor Commented:
Dear all,

The issue has been resolved. I created a new user called 'exadmin' and add it to domain admin, schema admin and enterprise admin group and logged in as exadmin and tried to install exchange 2010 setup and this time I succeeded.

Thanks a lot for all of your support.

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JJ KRWindows System administratorAuthor Commented:
Hi all,

I created exadmin' and add it to domain admin, schema admin and enterprise admin group and logged in as exadmin and tried to install exchange 2010 and issue resolved
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Windows Server 2008

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