In the background

`Microsoft Update Assistant…`Microsoft Update Assistant

● Safe to close

Installs updates for Microsoft apps.

What it is

Part of Microsoft AutoUpdate. It runs while updates install.

If you close it

The update stops and tries again later.

● Safe to close. An app you can quit with ⌘Q. Save your work first if it asks.

… means any name that starts this way.

From Procession’s guide, in the words the app shows.