re: right-click menu abridged on all workbooks
Gord's recommendation usually takes care of right-click menu problems.
You may have ignored his caution about workbooks with code altering the menu.
I would still check for add-ins and com add-ins that might be causing the problem.
Also, Windows10 has caused screwups with Windows and Office.
Another "remedy": with Excel
close****d , is to delete the Excel??.xlb file. (11,12,14,15,16)
That file contains the menu configurations for XL (menus and ribbon) and will be automatically rebuilt after Excel is started.
Any customizations will be lost.
You may have to do a file search to find it.
In my older Windows version (not Windows10) the file is located here...
C:\Documents and Settings\James Cone\Application Data\Microsoft\Excel
'---
Jim Cone
Portland, Oregon USA
https://goo.gl/IUQUN2 (Dropbox)
(free & commercial excel add-ins & workbooks)