<div>
This problem is still occurring. Since we have five domain controllers that are replicated, I am just pointing to one specific domain controller to do my administration as a workaround. If this is a domain trust issue, what am I supposed to do to resolve it?
</div>


This problem is still occurring. Since we have five domain controllers that are replicated, I am just pointing to one specific domain controller to do my administration as a workaround. If this is a domain trust issue, what am I supposed to do to resolve it?

<div>
Could you run:<br />
<br />
Repadmin /showrepl<br />
<br />
and<br />
<br />
DCdiag /v /c /e<br />
<br />
You can use &nbsp; &nbsp; &gt;test.txt &nbsp; to save it to files and post results here
</div>


Could you run:

Repadmin /showrepl

and

DCdiag /v /c /e

You can use     >test.txt   to save it to files and post results here

<div>
Also was this working before ? Have you checked Event log ?
</div>


Also was this working before ? Have you checked Event log ?

<div>
<div class="content wysiwyg-content">
When I switch to my subdomain, I get the following error: <br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/11_w45/1126258/2016-11-05_8-45-27.png" target="_blank" title="2016-11-05_8-45-27.png (19 KB)"><img alt="2016-11-05_8-45-27.png" class="file-block lazyload" style="max-width: 448px;" data-src="https://filedb.experts-exchange.com/incoming/2016/11_w45/1126258/2016-11-05_8-45-27.png" /></a><br />
I did notice that one of the DC was unavailable.<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/11_w45/1126259/2016-11-05_8-50-40.png" target="_blank" title="2016-11-05_8-50-40.png (152 KB)"><img alt="2016-11-05_8-50-40.png" class="file-block lazyload" style="max-width: 627px;" data-src="https://filedb.experts-exchange.com/incoming/2016/11_w45/1126259/2016-11-05_8-50-40.png" /></a><br />
In some google search, it was recommended to enable IPv6. I did that, and now the DC show as online. However, I still get the same error when trying to access our sub domain in AD MMC. I tried rebooting the DC that was initially unavailable but to no avail. <br />
<br />
This is all in an effort to try to resolve an issue for our users where whenever we try to change their password and have them change their password, they are unable to. They get a message indicating that their account is locked. <br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/11_w45/1126260/2016-11-05_10-03-30.png" target="_blank" title="2016-11-05_10-03-30.png (68 KB)"><img alt="2016-11-05_10-03-30.png" class="file-block lazyload" style="max-width: 444px;" data-src="https://filedb.experts-exchange.com/incoming/2016/11_w45/1126260/2016-11-05_10-03-30.png" /></a>
</div>
</div>


2016-11-05_10-03-30.png

2016-11-05_8-45-27.png

2016-11-05_8-50-40.png

When I switch to my subdomain, I get the following error: 



I did notice that one of the DC was unavailable.



In some google search, it was recommended to enable IPv6. I did that, and now the DC show as online. However, I still get the same error when trying to access our sub domain in AD MMC. I tried rebooting the DC that was initially unavailable but to no avail. 

This is all in an effort to try to resolve an issue for our users where whenever we try to change their password and have them change their password, they are unable to. They get a message indicating that their account is locked. 



Active Directory error: &quot;The domain could not be found&quot; when switching to a sub domain

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Active Directory error: &quot;The domain could not be found&quot; when switching to a sub domain

Active Directory error: "The domain could not be found" when switching to a sub domain