Remove Exchange 2013 CAS roles when server is already gone?

Steven Helms
Steven Helms used Ask the Experts™
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Is there a way to remove CAS roles and anything else when the server is already gone?
I have three servers EX1, EX2 and EX3.  How can I remove EX2?
Here is  what I receive with one PowerShell command.
[PS] C:\Windows\system32>Get-AutoDiscoverVirtualDirectory

Name                                    Server                                  InternalUrl
----                                    ------                                  -----------
Autodiscover (Default Web Site)         EX1
The task wasn't able to connect to IIS on the server 'EX2.example.local'. Make sure that the server exists and
can be reached from this computer: The RPC server is unavailable.
    + CategoryInfo          : ReadError: (EX2\Autodiscover (Default Web Site):ADObjectId) [Get-AutodiscoverVirtualDire
   ctory], IISNotReachableException
    + FullyQualifiedErrorId : [Server=EX1,RequestId=351ddc1e-65ff-4555-8e45-7a469fda99e1,TimeStamp=3/26/2017 5:59:41 P
   M] [FailureCategory=Cmdlet-IISNotReachableException] 30AB6771,Microsoft.Exchange.Management.SystemConfigurationTas
  ks.GetAutodiscoverVirtualDirectory
    + PSComputerName        : ex1.example.local

Autodiscover (Default Web Site)         EX3


[PS] C:\Windows\system32>
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Senior Systems Admin
Top Expert 2010
Commented:
Yes, but it has to be done in ADSIEdit. https://www.solvps.com/blog/how-to-force-uninstall-remove-exchange-server-2013-adsi-edit/ provides instructions on how to do it.
Steven HelmsIT Support

Author

Commented:
I only want to remove EX2, not all of Exchange.  If I can leave it in the config, then I am happy to do so.
Adam BrownSenior Systems Admin
Top Expert 2010
Commented:
Derp. Sorry. Same place in ADSIEdit, go to Services\Microsoft Exchange\<Organization>\Administrative Groups\<Administrative Group>\Servers and delete the server in there.
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Commented:
What does a Get-ExchangeServer show?
You can remove the Server from ADSIEDIT but just remember this can cause some other issues even later on so best practice would be recover the Server

Recover an Exchange Server
https://technet.microsoft.com/en-us/library/dd876880(v=exchg.141).aspx

And follow
Uninstalling Exchange Server 2010
http://www.careexchange.in/uninstalling-exchange-server-2010/

https://blogs.technet.microsoft.com/mspfe/2015/08/26/decommissioning-legacy-exchange-servers/


In case you don't want to recover the Server and want to remove it from ADSIEDIT then you can follow the steps shared by Adam or below article

http://msexperttalk.com/remove-exchange-server-using-adsi-edit/
Steven HelmsIT Support

Author

Commented:
Get-ExchangeServer shows
EX1
EX2
EX3
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Split:
-- Adam Brown (https:#a42065603)
-- Adam Brown (https:#a42065652)


If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

Delphineous
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