problem with certificate enrollment after migrating from windows 2003 to windows 2008

initially the migration went fine, i get dns problems when i set the new 2008 serv dns to itself, errors corrected when i point it back to 2003 serv, im getting cert errors

Certificate enrollment for Local system failed to enroll for a DomainController certificate with request ID N/A from servername.domain.dom\domain-servername-CA (The RPC server is unavailable.

when i research it looks like i need AD certificate services installed e.g i don't have the certificate templae snapin

i carnt understand whats happened it doesn't look like certificate services is running on new 2008 serv,
BOS-TECHAsked:
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JohnGrunwellCommented:
Did you move the FSMO roles from the old server to the new?
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BOS-TECHAuthor Commented:
yes, everything has been going well, no errors i ran dcdiag and it looked fine before and after, changing dns to itself caused errors e.g

event id 2092
This server is the owner of the following FSMO role, but does not consider it valid. For the partition which contains the FSMO, this server has not replicated successfully with any of its partners since this server has been restarted. Replication errors are preventing validation of this role.

i changed dns back to 2003 serv it is still a DC, and this error went away, should AD certificate servcies be installed at this stage
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BOS-TECHAuthor Commented:
thanks for the links, replication went fine initially, with dns pointing back to 2003 DC looks ok, i also disconneted 2003 DC and successfully logged into domain with win xp machine, would it be ok to go ahead and install certificate servcies now or should i move fSMO roles back incase there are further issues,
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JohnGrunwellCommented:
moving CA to a different computer check this out
http://technet.microsoft.com/en-us/library/cc755153(WS.10).aspx
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BOS-TECHAuthor Commented:
thanks, i was just looking along those lines, the migration didn't mention anything about moving CA, i'm going to continue on with migration, i still have image of old 2003 serv if things get to messy,
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JohnGrunwellCommented:
look at this one it explains to move CA to a host with a different name.
http://technet.microsoft.com/en-us/library/cc742388(WS.10).aspx
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BOS-TECHAuthor Commented:
i found the initial probem, i missed the following in the event logs before i started migration:

event id 58
A certificate in the chain for CA certificate has expired.  A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file

cert services wont start on 2003 DC, the question can i migrate AD when he CA cert has expired and how
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JohnGrunwellCommented:
if you got to sites and services under admin controls, expand servers, click on ntds settings can you force ad replication between the two?
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BOS-TECHAuthor Commented:
replicaiton seems ok, as long as new 2008 dc uses win 2003 dc for dns, i'm not sure how to recover cert services and problems this will cause on new 2008 dc
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JohnGrunwellCommented:
if you need to renew the cert on 2003 dc you can open Certification Authority, click Start, click Control Panel, double-click Administrative Tools, and then double-click Certification Authority.
Click all task and click on renew Cert.
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