Miscellaneous topics that do not fit into specific categories.
You can use the instructions below
Close all Office apps.
Open Finder, then press Command + Shift + G.
Paste this path and press Enter:
/Library/Application Support/Microsoft/MAU2.0/
Find Microsoft AutoUpdate.app and rename it to Microsoft AutoUpdate.app.disabled.
Enter your Mac administrator password if prompted, then restart your Mac.
This should prevent Microsoft AutoUpdate from launching normally and showing update reminders. However, it also disables automatic Office security updates, just fyi.