Hello. My name is***** to JustAnswer. I'm reviewing your question now, and will post back with your reply momentarily.
What program is it disappearing in? Firefox, Chrome, IE? (please check and specify if it happens in one or all please)
Try this for me.
Activate the File tab of the ribbon.Click Options.Click Advanced.Scroll down to the Display section.Make sure that the check box "Show verticval scroll bar" is ticked.Click OK. In Excel first.
if it now shows, that is what you do for your programs.
If this is a resolution issue with second monitor (i had the same issue, my second is a dell, first is vizio) And the word doc is 'to big'
and we will have to adjust your resolution on that second monitor.
Let me know what happens.