I have two linked worksheets within the same workbook... and have been using
this workbook for months now. Only recently, it started updating the links
automatically... without prompting.

I do have "Ask to update automatic links" checked in Tools Options Edit.

Edit Links is not an available option (greyed-out).

This workbook is shared on the network and accessed by 2-3 different
computers.

Why am I not being prompted?