2016 - worksheet unshare option does not appear on ribbon and not in customise

Another of microsofts helpful changes

had to change excel 2016 32bit to 64bit

shared the workbook to allow use in another room

cant see how to share now to adjust code

any pointers short of vba

Any ideas...

I shared one workbook and now have no workbook share options anywhere on the review tab ribbon

not even greyed out

tried loading from customize ribbon - no option listed

the amount of of time spent on Microsofts idiosyncrasies around the world must be staggering in scale....all I want to do is unshare a workbook

Help appreciated

Have tried repairing 64 bit

If cant sort today goodbye 64 bit.....back to 32 bit

Found it

https://support.office.com/en-ie/art...1-6c259303fe05

only 6 hours wasted