OSA.exe OSA9.exe
(Microsoft)
Microsoft Offices Office Startup Application. Present in Microsoft Office 97, 2000, and XP where it is called OSA9.EXE. According to Microsoft, OSA enables Microsoft Office programs to start faster. It is our view, however, that most Microsoft background programs whose purpose is to enable you to "do something" faster, are a total utter waste of time and, worse, they also sometimes have extremely irritating side-effects which completely negate their supposed benefits (such as the annoying and infamous FindFast).
Recommendation :
Delete or disable using Startup Manager.