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Here are a few simple methods that should help resolve the dfs error that the namespace could not be queried, the RPC server is not available.

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This provides a solution to a bug that the experts claim occurs when creating a DFS namespace.

Applies to: Windows Server 2012 R2
Original base number 2021914

Symptoms

With knowledge: trying to create an absolute dfs A namespace on a Windows 2009 server, you can observe the following:

The namespace could not be queried. The RPC server is unavailable.

This issue usually occurs in an environment where a third-party DNS server is used.

Reason

This error can occur if the domain does not have a DomainDNSName entry registered. These updated entries are updated by Netlogon on the domain controllers. They are usually the same as the parent entries in the forward trace zone domain.

The following documentation states that the pas history is not required and is only used for DNS clients that do not need to understand SRV records:
How Active DNS support works for a directory.Es

Allows a non-SRV compliant client to find any domain controllers in the domain, sinceku A is looking for a record. A call to this form should normally be returned to be an LDAP client via referral ldap A non-SRV compliant client looks up 1 name; a compatible SRV client looks for the correct SRV resource record.

In the network trace, you will see a DNS lookup for the A record of domaindnsname, and the DNS server will definitely respond with a soa record if no such A records exist.

Dns: QueryId means 0x887c QUERY (standard query), search for adatum.com of type Host Addr in Internet
class to queryQRecord: enter adatum.with com host address in group Online

dns: (standard request), response – success
QRecord: adatum.com of type Host Addr in class Internet
AuthoritativeRecord: adatum.com Web SOA Development Class: PrimaryNameServer: adadc1.adatum.com, AuthoritativeMailbox: hostmaster.adatum.com

Resolution

Update the DNS server entries or create a Windows Server style HOSTS file specifying that the computer has the fully qualified name and IP addresses of the domain controller.

adatum.com 192.168.2.10
adatum.com 192.168.3.10
adatum.com 192.168.4.10

2 minutes playback

I have DFS01 (192.168.50.12) in domainA.local (Windows Server 2012 R2) and DFS02 (192.168.0.5) do with domain B. (Windows local server 2016)
The domains are trusted throughout the whole connection and work well.

Maybe I can ping FQDN A from B and B to B without any problems

i to DFS01 namespace: domainA is.localdata
I created this namespace on DFS02: domainB.localdata

In DFS01 I can update the new namespace to reflect: domainB.localdata which we can access without issue.

In DFS02, when my wife and I try to add the new namespace domainA:.localdata to the demo, I get the following error message: Cannot each query namespace . The RPC server may be described as unavailable.

Necessary

I need to create a namespace based on a domain, but when I click “Next” on the “Select a page for the recording wizard” page, I get the message:

The namespace could not be queried. The RPC server is unavailable.

Actually, I found a related article about this issue, and the DomainDNSName DNS parameter was wrong. Even if I solved this problem, I stick with DNS to receive this message.

Do you have any ideas for solving the problem?Is it possible that this is due to the fact that I created the domain name one with the label?

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Remove DFS domain namespace

We have a domain-based namespace created specifically for testing purposes that we need to exclude. The server that hosted the namespace has now been renamed and is a working registration server. I can create a namespace for the DFS Management MMC snap-in, butI can help you remove it. I get the following
message:

Unable to query namespace error. Our RPC server is unavailable.

This error does not actually occur with newly created namespaces.
How do I delete a namespace?

that old mistakeThis evaluation tells the emulator that the primary domain controller is unavailable or has failed. Perhaps
is it true?

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No. The PDC emulator is running. I ran a netdom fsmo query and
confirmed that I had assigned that role to my domain controller in turn, and best of all, everything is up and running. DNS also resolves correctly. This does not apply to
new domains created for each namespace, but only to the one in which it was created by the server before
the rename.

Communication with Ned Pyle [MSFT]
This error tells the emulator that pdc is not workingt or unavailable.
Is that right?
—
Ned Pyle
Platforms microsoft Enterprise Support
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For details see .

Theoretically, you can add any WINS and DNS record of the “old” server name,
actually pointing to the new forum (CNAME record). Can you start with this?

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deletion messages from this newsgroup are provided “AS IS” without warranty of any kind, and
transfers absolutely no rights.
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