Removing Exchange 2010 before decommissioning SBS 2011 lost access to Active Directory on both servers.

Question

I'm trying to decommission an SBS 2011 server and promote my Server 2019 to take over all roles. The 2019 server is a domain controller but does not yet hold any FSMO roles. The email has long been moved and I'm just trying to remove Exchange 2010, transfer roles, and demote the server. Well I kept getting an error when removing the Mailbox role from within the EMC. So I'm trying just to remove the few mailboxes that were in there as well as both the Public and Private databases. It seems like shortly after I removed the Admin mailbox from the Exchange Management Console, not active directory or the SBS Console "explorer" locked up and restarted. Then I started receiving new errors when finishing removing the mailboxes. Basically I couldn't do anything and started getting user errors. So thinking it's just Exchange being jacked up because this was the last role to remove I rebooted the SBS server.

Now I cannot remotely access the SBS server with the Admin logon, I get a user account error. I'm still remoted into the 2019 server but getting user account permission errors when trying to access anything inside the Administrative Tools. I don't need anything off of this SBS server but I do need access to Active Directory so I can finish my my deployment. I'm definitely afraid to disconnect form the 2019 server as it seems the user account is hosed and yes it's the only domain admin account. The last thing I expected to happen. How does removing the Admin mailbox hose the entire user account? Anyone have any ideas on what I can do?

Answer 1

Yes, that would have been much simpler method. Remove from network then seize roles if needed.
https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/transfer-or-seize-fsmo-roles-in-ad-ds

then perform clean up.
https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/ad-ds-metadata-cleanup
https://techcommunity.microsoft.com/t5/itops-talk-blog/step-by-step-manually-removing-a-domain-controller-server/ba-p/280564

--please don't forget to Accept as answer if the reply is helpful--

Answer 2

Friend, did you mean integrate your stations into the domain? if it's really not much secret and also see the need of your network.

see if the following services are in the air to put your stations in the Domain. with SBS2019.

Make sure the AD DS service is installed and DNS.

if you have everything Ok with your server can this follow the steps below.

Go to My Computer with the right click, Properties, in the Computer Name tab goes to settings, then will be selected probably Working Group and the name just below the group. just select DOMAIN and put the domain in which it was configured on your server SBS2019, then ask the user and password of your server, just provide them and restart the computer.

about the provider I do not see any problem, need to see the configuration of your link etc. The restore step can be done after exhausted all the features of server settings.

Hugs

IRAÊ CÉSAR BRANDÃO

Answer 3

Perfect guidance from Dspatrick, what was not clear is whether it was working without problems previously. Also check that the communication ports are open and accessible and that the valid IP is active and accessible. Some security update can cause the Server to block ports and permissions, verify ing the firewall if the permissions are also correct.

Hugs

Iraê César Brandão.

Answer 4

See this link if it helps you:

https://social.technet.microsoft.com/forums/pt-BR/5952489e-37ba-4499-8ec7-94d74823e16c/problemas-com-conta-de-email-no-exchange-2010