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Please help improve this section by adding citations to reliable sources. It is the first version of Office to support only NT-based operating systems as support for DOS-based versions of Windows was entirely eliminated.This section does not cite any sources. This version of Office supports Windows 2000 Service Pack 3 to Windows 7 alongside their server counterparts, although it can unofficially run on Windows 8 and later. System requirements were raised to Windows 2000 SP3, Windows XP RTM, and Windows XP SP1. for templates) as the default file format and to have Arial and Times New Roman as the default fonts across all applications. It is also the last version of Office to include the traditional menu bar and toolbar interface across all programs, as well as the last version to use the '97 - 2003' file format (. However, the latter option is still available and will be installed if the user installs Office 2003 with the 'Complete' install type or if the user enables the option after selecting the 'Custom' install type. It no longer comes with the Microsoft Office Shortcut Bar and it no longer installs shortcuts to create a new or open an existing document on the Start menu by default, as both become hidden under the new two-column Start menu of Windows XP and Windows Server 2003. It needs to be installed and enabled manually, since it is disabled by default since Office XP and no longer installed by default starting with this version. It is the last version of Office with the Office Assistant included.

OneNote and InfoPath also debuted with this Office version. It includes a refreshed UI, which changed its color in relation to the selected visual style.

Office 2003 service pack 1