"proplus.msi is the installation file used to install all office
PROfessional PLUS (yes ProPlus) services, hence Microsoft Service
Installation (yes, MSI). when you install office xp pro the msi file acts as
an organiser and delivers all the services (frontpage, excel, word etc) to
the directory you choose. But IT DOES NOT COPY ITSELF, therefore everytime
you upgrade or re-install the product the proplus.msi will ask for this
file. "
osa - osa.exe - Process Information
Process File: osa or osa.exe
Process Name: Office Startup Assistant
Description: The Microsoft Office Startup Assistant is loaded at Startup and improves performance by handling automation, office fonts, certain office commands and Outlook notifications
Common Errors: N/A
System Process: No