Dear IT people,

I think it's wonderful that you've discovered how to write a script that will push updates to my work PC.  Having a common, supportable configuration is a worthy goal.
Unfortunately, you've yet to discover the fact that my PC has an actual user who is trying to get work done.  Sometimes, this user might even be writing profound and important thoughts that our company will sell to its customers.
Given your lack of ability to discern when such activity might be happening, please do assume that it is.  That way, you won't be tempted to pop up an absolutely useless dialog box that steals focus away from the task your user is attempting to complete, while simultaneously causing the user in the next cube to scream in frustration, because his train of thought just got derailed too.