Service Pack for Biztalk Server.

Service Packs contains a collection of hotfixes, security fixes, and performance enhancements. Before installing any Service Packs, it is recommended that you carefully review the documentation. It's always good to patch your system with latest Service Packs.

Available Biztalk Service packs

Cumulative update package 1 for BizTalk Server 2009
Author:Microsoft ( 10/29/2010 )
This cumulative update for Microsoft BizTalk Server 2009 contains hotfixes for the BizTalk Server 2009 issues that were resolved after the release of BizTalk Server 2009
BizTalk Server 2006 R2 Service Pack 1
Author:Microsoft ( 1/27/2010 )
Microsoft BizTalk Server 2006 R2 Service Pack 1 (SP1) is an update for BizTalk Server 2006 R2. The SP1 installation program that’s available on this page offers a unified installation experience: It will automatically detect and update all of the BizTalk Server components that are currently installed on your machine. It will also detect all BizTalk Server hotfixes currently installed, and will distinguish between hotfixes that predate this service pack, and those which were issued after this service pack was released. An SP1 Guide document is also available for download on this page, and describes the installation experience in detail.
Microsoft BizTalk Server 2004 Service Pack 2
Author:Microsoft ( 10/25/2006 )
Microsoft BizTalk Server 2004 Service Pack 2 contains many important fixes. In addition, a new feature called Archiving and Purging has been added. Before installing BizTalk Server 2004 SP2, it is recommended that you carefully review the documentation. View list of bugs fixed
Microsoft BizTalk Server 2004 SP1
Author:Microsoft ( 12/16/2004 )
BizTalk Server 2004 SP1 contains a collection of hotfixes, security fixes, and performance enhancements. Before installing BizTalk Server 2004 SP1, it is recommended that you carefully review the documentation located in the Related Resources section to the right. View list of bugs fixed
BizTalk Server 2004 Rollup Package 1
Author:Microsoft ( 4/8/2004 )
The BizTalk Server 2004 Rollup Package 1 provides a cumulative rollup of updates that have been offered since the release of BizTalk Server 2004.