Os9.exe

The Office Startup Assistant (Osa.exe or OSA) is a program that improves the performance of Office XP programs. Office Setup places a shortcut to the Osa.exe file in the Windows Startup folder; the file is named "Microsoft Office".

The Osa.exe file initializes the shared code that is used by the Office XP programs. When you use the Osa.exe file to initialize shared code, the Office XP programs start faster. If the Office programs, instead of Osa.exe, initialize the shared code, the programs take longer to start.

You can safely remove the Osa.exe file without causing the Office XP programs to fail. However, if you remove Osa.exe, you no longer benefit from the performance advantages that are provided by running Osa.exe.

More information and a detailed description of what this file does can be found in Microsoft's Knowledgebase: http://support.microsoft.com/default.aspx?scid=kb;EN-US;q290144.

Safe

Microsoft