Exchange 2010 SBS Exchange not connecting since transfer of Master roles to 2012 Server

CRL ltd
CRL ltd used Ask the Experts™
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the old exchange is still online but it's asking for prompts for the users since I've migrated the FSMO roles over to the 2012 R2 server.
Machines can ping and access it still but I can't get any users to connect via Outlook regardless of version.

any thoughts would be much appreciated.
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MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Commented:
Hi,
Did you add the new DNS server address in the exchange server network card properties?
Use this command to check your DC in use by Exchange.
Get-ADServerSettings | fl

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Use this command to configure preferred DCs.
Set-ADServerSettings -PreferredServer newdc.domain.local

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Sr IT Support Engineer
Commented:
The problem here is that you broke it.  Or rather you broke the licensing when you transferred off the FSMO roles.    How long ago did you do this?   Typically within 7 days after transferring the FSMO roles, the SBS server will begin shutting down every hour or so.

SBS must hold all the FSMO roles.   You can have additional DC's if you wish, but the SBS server has to be the boss!
David AtkinTechnical Director
Top Expert 2015
Commented:
Cris is correct here.

You either need to transfer the FSMO roles back to the SBS or decommission the SBS.
Cris HannaSr IT Support Engineer

Commented:
The author put the SBS server into an unsupported configuration causing some components to stop functioning

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