The original release version of Outlook 2003 was released in October of 2003. Outlook 2003 version information Outlook 2003 version This is the original RTM release of Outlook 2007. Outlook 2007 version information Outlook 2007 version This is the original RTM release of Outlook 2010. Outlook 2010 version information Outlook 2010 version This is the original RTM release of Outlook 2013. Outlook 2013 version information Outlook 2013 version The following information lists the version information and the build numbers for the U.S. Verify the version information and the build number to determine the version of Outlook that is installed on your computer.On the Help menu, select About Microsoft Office Outlook.To determine the version of Outlook that you use, follow these steps: Links are provided at the bottom of the article for Microsoft Outlook 97, and Outlook 2000 version information. This article lists the different versions of Microsoft Outlook 2002, Microsoft Office Outlook 2003, Microsoft Office Outlook 2007, Microsoft Office Outlook 2010, and Microsoft Office Outlook 2013 and describes how you can determine the version that you have installed on your computer.

Outlook 2003 service pack 3