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So the answer pet Microsoft is yes you can upgrade in place<br />
Occasionally there is only 1 server and you have no option.....<br />
But if you have any flexibility you should built a new seever and migrate some data<br />
This is more work for setup/build<br />
But a cleaner job which will be l3ss probl3matic in the long run
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So the answer pet Microsoft is yes you can upgrade in place
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where does it say that?<br />
exchange has not supported in-place upgrades since exchange 2000<br />
<br />
<i><u>In-Place upgrade from Server 2008R2 to Server 2012 with Exchange 2010 installed</u></i><br />
<a href="https://www.experts-exchange.com/questions/28410394/In-Place-upgrade-from-Server-2008R2-to-Server-2012-with-Exchange-2010-installed.html" rel="ugc">https://www.experts-exchange.com/questions/28410394/In-Place-upgrade-from-Server-2008R2-to-Server-2012-with-Exchange-2010-installed.html</a>
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Possible, Yes it is. if current server is not in use. What you are looking, using your current server hardware, so you can use it, until it is not used for other purpose. Format it, install 2012, install Exchange 2013.
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In Place Upgrades of Exchange are not supported. More info here.<br />
<a href="https://social.technet.microsoft.com/Forums/exchange/en-US/d0a521df-8b85-47d4-aad1-fd40140379ea/in-place-upgrade-error" rel="ugc nofollow">https://social.technet.microsoft.com/Forums/exchange/en-US/d0a521df-8b85-47d4-aad1-fd40140379ea/in-place-upgrade-error</a>
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You can't upgrade from a 32bit version of the OS to the 64bit versions.<br />
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Best regards
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Both are 64 bits..... but yes, we are using Exchange 2010 and we want to upgrade it to Exchange 2013....<br />
So, in place upgrade is out of the question right?... :(
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but, Can I migrate Exchange to another server, uninstall Exchange, upgrade Windows 2008 to 2012 , install Exchange 2013, and then migrate all mailboxes again, will it work?, or it´s better a fresh install?
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Thank you all for the information!!<br />
We just acquire a new server!! I´ll do as you all recommended, install the new server, move everything, then bring it back once the new version of Windows/exchange is installed on the old server.
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I have a server with Windows 2008 R2 with Exchange 2010 installed, we have Windows assurance and we want to upgrade this server to Windows 2012 and Exchange 2013, can I make an inplace upgrade?, Or I need to move the services to another server, format, reinstall and then move back the services?
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I have a server with Windows 2008 R2 with Exchange 2010 installed, we have Windows assurance and we want to upgrade this server to Windows 2012 and Exchange 2013, can I make an inplace upgrade?, Or I need to move the services to another server, format, reinstall and then move back the services?

Can I make inplace upgrade from windows 2008 to 2012?

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

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.

Windows Server 2008

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.