I've been trying to get a definitive list of prerequisites for the upgrade to Exchange 2013 CU7, but every time I find another site with info it says something different.

I know I need to have Domain functional level at 2008 SP1 to run the Schema extension, no problem there. However, I found something that tells me I need to have the Exchange servers running .NET Framework 4.5.2 and Windows Management Framework 4.0, but the same site then says this is actually needed on the machine used to prepare AD. that means it needs to be one of the domain controllers running these.

Other sites say these need to be installed but do not say which server(s) need them.

Can anyone give me the list of prerequisites? The information I managed to find on the Microsoft site mentioned nothing about the domain functional level, I only found this requirement after trying to run the schema extension and getting a report the DFL needs to be 2003 native mode or above, I ran a targeted search for DFL requirements and found a table listing this for different versions of Exchange.

This is frustrating to say the least, makes carrier pigeons seem a viable alternative right now!

• Merged by Amy.WangMicrosoft contingent staff, Moderator 8 hours 36 minutes ago duplicated thread

I've been trying to get a definitive list of prerequisites for the upgrade to Exchange 2013 CU7, but every time I find another site with info it says something different.

I know I need to have Domain functional level at 2008 SP1 to run the Schema extension, no problem there. However, I found something that tells me I need to have the Exchange servers running .NET Framework 4.5.2 and Windows Management Framework 4.0, but the same site then says this is actually needed on the machine used to prepare AD. that means it needs to be one of the domain controllers running these.

Other sites say these need to be installed but do not say which server(s) need them.

Can anyone give me the list of prerequisites? The information I managed to find on the Microsoft site mentioned nothing about the domain functional level, I only found this requirement after trying to run the schema extension and getting a report the DFL needs to be 2003 native mode or above, I ran a targeted search for DFL requirements and found a table listing this for different versions of Exchange.

This is frustrating to say the least, makes carrier pigeons seem a viable alternative right now!

Hello,

My answer below is only based on the results of my work of the day, I don't pretend have the absolute answer at your question.

I applied CU7 on two servers Exchange 2013 today. Each server hadn't (and still haven't) .NET Framework 4.5.2 installed and the two work well without any problem.

The schema extension was performed from the Exchange servers, still no problem without 4.5.2 version.

For Windows Management Framework, my two servers have WMF 3.0, again no problem with CU7.


The technet's website indicates that the WMF 4.0 and .NET Framework 4.5.2 are prerequisites for Exchange CU7, but in practice, no problem (for now) if they are not present. Plus, it is important to know .NET Framework 4.5.2 is only supported by exchange 2013 CU7 or it could break Exchange services (http://msitpros.com/?p=2110).

But, as usual, I suggest you to follow the Microsoft's prerequisites ifyou can : install WMF 4.0 and .NET Framework 4.5.2 (after the update to CU7 if you prefer, for the reasons above) https://technet.microsoft.com/en-us/library/bb691354(v=exchg.150).aspx 

I've been trying to get a definitive list of prerequisites for the upgrade to Exchange 2013 CU7, but every time I find another site with info it says something different.

I know I need to have Domain functional level at 2008 SP1 to run the Schema extension, no problem there. However, I found something that tells me I need to have the Exchange servers running .NET Framework 4.5.2 and Windows Management Framework 4.0, but the same site then says this is actually needed on the machine used to prepare AD. that means it needs to be one of the domain controllers running these.

Other sites say these need to be installed but do not say which server(s) need them.

Can anyone give me the list of prerequisites? The information I managed to find on the Microsoft site mentioned nothing about the domain functional level, I only found this requirement after trying to run the schema extension and getting a report the DFL needs to be 2003 native mode or above, I ran a targeted search for DFL requirements and found a table listing this for different versions of Exchange.

This is frustrating to say the least, makes carrier pigeons seem a viable alternative right now!

• Merged by Amy.WangMicrosoft contingent staff, Moderator Wednesday, February 18, 2015 3:12 AM duplicated thread

Hi,

Yes, the computer that will be used to prepare Active Directory for Exchange 2013 should meet the version of Microsoft .NET Framework and the version of Windows Management Framework.

Exchange CU7 and later   .NET Framework 4.5.2

Exchange 2013 SP1 or later   Windows Management Framework 4.0

Hope this can be helpful to you.

Best regards,

If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

.Net 4.5.2 is not required but recommend. 4.5 is required.

WMF4.0 is not required or recommended at all.

Thanks to everyone who has replied, but the fact 3 different people have replied and given varying replies is what I was talking about.

Microsoft, in the prerequisites information found at https://technet.microsoft.com/library/bb691354(v=exchg.150).aspx say this

Active Directory preparation

Hi,

Is there any update with your issue?

Best regards,

If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com