troubleshooting Question

This server is the owner of the following FSMO role, but does not consider it valid (Schema)

Avatar of Carol Chisholm
Carol ChisholmFlag for Switzerland asked on
Active DirectoryWindows Server 2008
12 Comments2 Solutions10029 ViewsLast Modified:
Single site single domain single forest. I have messed up my AD replication. It was working a while back.
Now the DC which holds the schema master role is unhappy.
At boot I get a 2092 ActiveDirectory_DomainService shown below.

DNS loook OK and is installed on both DCs. They are int he same subnet with no firewall.

nslookup resolves both DCs correctly on each server.

repadmin /show repl has no errors on the DC which is not supposed to be schema mastre

on the problem DC

Last attempt @ 2012-02-14 17:10:19 failed, result 1722 (0x6ba):
    The RPC server is unavailable.
24 consecutive failure(s).
Last success @ 2012-02-13 20:50:51.

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.
Operations which require contacting a FSMO operation master will fail until this condition is corrected.
FSMO Role: CN=Schema,CN=Configuration,DC=smalldom,DC=pri
User Action:
1. Initial synchronization is the first early replications done by a system as it is starting. A failure to initially synchronize may explain why a FSMO role cannot be validated. This process is explained in KB article 305476.
2. This server has one or more replication partners, and replication is failing for all of these partners. Use the command repadmin /showrepl to display the replication errors.  Correct the error in question. For example there maybe problems with IP connectivity, DNS name resolution, or security authentication that are preventing successful replication.
3. In the rare event that all replication partners being down is an expected occurance, perhaps because of maintenance or a disaster recovery, you can force the role to be validated. This can be done by using NTDSUTIL.EXE to seize the role to the same server. This may be done using the steps provided in KB articles 255504 and 324801 on
The following operations may be impacted:
Schema: You will no longer be able to modify the schema for this forest.
Domain Naming: You will no longer be able to add or remove domains from this forest.
PDC: You will no longer be able to perform primary domain controller operations, such as Group Policy updates and password resets for non-Active Directory Domain Services accounts.
RID: You will not be able to allocation new security identifiers for new user accounts, computer accounts or security groups.
Infrastructure: Cross-domain name references, such as universal group memberships, will not be updated properly if their target object is moved or renamed.
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