Will Outlook 2002 clients break when upgrading domain to 2008R2?

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M

Mike ODonnell



We have a 5,000 user 2003 A/D environment, using Exchange 2007 for email. Our clients are a mix of Outlook versions, from 2002 to 2010. We're trying to get our clients updated, but it's not a quick process.

We are in the process of replacing our DC's with 2008R2. Our plan is that when the last 2003 DC is replaced, we will upgrade our domain to native mode 2008R2.

One of our admins had "heard" some very vague information that going to A/D Native mode 2008R2 will cause problems with the Outlook 2002/XP clients.

I've done some searching, as well as posting on the server areas, but so far I've not found much info.

Is anyone running Outlook 2002/XP clients in a native mode 2008R2 A/D environment?

Any information would be appreciated.

Mike O.
 
T

TWHarrington



According to the Exchange Supportability Matrix: http://technet.microsoft.com/en-us/library/ff728623.aspx

Exch 2007 is supported in a native 2008 R2 domain as long as you are on Exch 2007 SP2+ (or SP1 with RU9). Also in the clients section, Outlook 2002 is fully supported on Exch 2007 SP1 and SP2 (but not SP3!). As long as you comply with the supportability matrix, then you should be fine and you will get full support from MS.
 
S

Sally Tang



Hi Mike,

I am writing to see how everything is going with this issue. Does Tim's reply help on this issue?

Best Regards,

Sally Tang

 
M

Mike ODonnell

We recently updated our Exchange 2007 to SP3. Our Outlook 2002 clients are working OK, so should they continue to work if we update the domain to 2008R2 native mode?
 
M

Mike ODonnell



It helped, but unfortunately (for us), it brought up a different issue. We recently updated our Exchange 2007 environment from SP2 to SP3, to provide compatiblity with 2008R2 (we're looking at moving our Exchange enviroment to new hardware). According to the support matrix that version of Exchange isn't supported with Outlook 2002. It is working, though, so

The support matrix shows which things are supported with Exchange, but it still doesn't show if there are any issues with Outlook 2002 and A/D 2008R2.

I guess what I'm hoping to find is someone who's actually using that combination.

Mike O.
 
T

TWHarrington

I think you are looking at it the wrong way. Outlook version doesn't really corelate with AD versions. Outlook version must work with Exchange, Exchange must work with AD. I can load Outlook in any AD environment. What matters is what Outlook is connecting to. In this case it is Exchange 2007 SP3. As far as the fact that Outlook 2002 isn't in the supportability matrix for Exch 2007 SP3 doesn't mean it isn't going to work. Supportability is different then what actually works. This means that Microsoft has not run through all the supportability checks with SP3 like they did with SP1 and SP2. If you ever end up having to call MS for support they might give you a hard time since it is not in the supportability matrix. Depends on who you get. The safist thing to do is to upgrade your Outlook client so that you are in a fully supported configuration.
 
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