Microsoft Released Exchange Server 2010 Service Pack 1 on August 25, 2010. As with all Microsoft Service Packs, it includes the roll up of the security updates since the product RTM in October 2009. There are also some new features and updates for archiving, OWA, and mobile user and management improvements.

Service Pack 1 gives OWA a faster reading experience, and other UI changes that make the user experience better on smaller screens, such as on Netbooks.Now OWA users can enable calendar sharing with anonymous viewers over the Web – if enabled by Exchange Admins and the OWA User.

Download Exchange Server 2010 SP1 from http://www.microsoft.com/downloads/details.aspx?FamilyID=50b32685-4356-49cc-8b37-d9c9d4ea3f5b&displaylang=en