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All that should be required to decommission Exchange is to uninstall, however it can be quicker to just turn off and then clean up AD<br />
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Youy might find this document useful <a href="https://gallery.technet.microsoft.com/office/Rapid-Migration-from-1daaee0c" rel="ugc">https://gallery.technet.microsoft.com/office/Rapid-Migration-from-1daaee0c</a>
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System Administrator

alex alexandre

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i am having an issue now mobile users on 2016 not able to setup their email
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i am in the process on migration from exchange 2010 to 2016 and lync to SBB 2015 &nbsp;whats the proper way to decommission the exchange 2010 and the lync server
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i am in the process on migration from exchange 2010 to 2016 and lync to SBB 2015  whats the proper way to decommission the exchange 2010 and the lync server

exchange and lync migration

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Lync Server (renamed Skype for Business Server in 2015) is a real-time communications server software that provides infrastructure for enterprise instant messaging, presence, VoIP, ad hoc and structured conferences (audio, video, and web), and PSTN connectivity through a third-party gateway or SIP trunk. These features are available within and between organizations, and with external users on the public internet or standard phones (on bpth PSTN and SIP trunking).