Activation.exe (Microsoft) Microsoftâs Activation module for their Windows XP and Microsoft Office XP/2002 products. Recommendation : Leave alone. We are not yet sure as to how exactly ACTIVATION.EXE works; however, given the problems one can run into with inactivated Windows XP / Office XP / Office 2002 products at the best of times, we do not recommend doing anything with this background task.
