I seem to be unable to add any more programs to the listings of my start menu. The issue arose when I installed Office 2016. Access and Excel seemed to be added to the start menu listings. But the rest of the programs did not show up. The shortcuts were actually present in the start menu folder (C:\ProgramData\Microsoft\Windows\Start Menu\Programs) but did not show up on the listings.
I then moved the shortcuts around to try and get them to be detected, removing all of the office shortcuts and restoring them to the folder made the Access and Excel entries be removed altogether.
Oddly one by one some shortcuts have reappeared but the majority of them aren't in there so its very awkward to start programs. Also new programs ive installed since havent been added at all.