Outlook 2003 Service Pack Level requirement for Exchange 2010?

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C

carlo1234

What Service Pack level does Outlook 2003 need to be at for it to operate with Exchange 2010 SP1 running on Server 2008?
 
M

[MT]

Outlook 2003 SP2 and later

For your further reference: Read this post

" Note
When using Outlook 2003 or earlier to connect against an Exchange 2007 or 2010 organization, you must make sure a public folder database exist in the organization. This is because Outlook 2003 and earlier uses public folders to retrieve free/busy information and the offline address book (OAB). For more information see: Microsoft KB article: When you use Outlook with an Exchange 2007 mailbox, you cannot connect to Exchange 2007, and you receive an error message. "

MT | MCITP ----- Please vote helpful or mark as answer if it's answered your question, this help us follow up the question status.
 
G

Gen Lin

Hi,

All versions of Outllook 2003 are compatible with Exchange 2010 SP1. But be aware of the following when you upgrade your organization to Exchange 2010:
Clients running Outlook 2003 don"t use RPC encryption, which RPC Client Access requires by default. You will either need to turn off the RPC encryption requirement or configure Outlook 2003 to use RPC encryption. However, Outlook 2007 and later versions are automatically compatible with the change to RPC Client Access because they support RPC encryption by default. For more information, see Understanding RPC Client Access. On clients running Outlook 2003, you may notice that folder updates don't occur automatically in a timely manner. This situation occurs because User Datagram Protocol (UDP) notifications aren't supported in Exchange 2010. For more information about resolving this issue, see Knowledge Base article 2009942, In Outlook 2003, e-mail messages take a long time to send and receive when you use an Exchange 2010 mailbox. However, Outlook 2007 and Outlook 2010 are automatically compatible with this change.

 
M

[MT]

I would suggest refer to this wiki post, as it was consolidated post to aware the issue & resolution when co-exist with older version of outlook.

+plus ~ You can helping by contribute consolidate the post if you found something new and share with the community :)
MT | MCITP ----- Please vote helpful or mark as answer if it's answered your question, this help us follow up the question status.
 
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