The GPUpdate command operates by instructing the Group Policy Client service to re-evaluate the applicable GPOs for the target computer and user. Unlike its predecessor, secedit , GPUpdate is integrated specifically with the Group Policy infrastructure, allowing it to handle both security policies and preference items.

A message popped up from Accounting: "Thank you! Mr. Waddles was starting to stare into my soul."

Remember that is the perfect companion command to verify which policies were actually applied after your update.