Legacy software not being listed

Hi all,

I upgraded to 10 a few days ago and have found that, although previously installed software is still installed and accessible, they are not being listed in the "All Apps" list and also not in the Uninstall list (only software installed since the upgrade is in these). Is this a common problem and is there any rectification that people are aware of. I previously had Win 7 Enterprise on the PC and have installed 10 Pro over the top - I realise this is not a standard upgrade path but it seemed quite happy to do it!

Many thanks

Same here and looking for the solution. What I've found so far have been tips that refer to a folder with the exact same path as it is since W7/Vista. True: I see some applications in that path, and the program groups for which we used to create a folder show in the alphabet menu. Weird ofcourse that all programs appear in the 'root' alphabet-menu as well as they do in the grouped folder (in the alphabet-menu). It's a two in one way of presentation with half of it missing.
Didn't find anything to get it right yet, as I said...

And a by the way: I checked the permissions too that were reset by the upgrade, but to no avail. Permissions do not seem to be the issue here.

To explain: the all users Program data folder has teamviewer:

But the Alphabet-menu 'All Apps' does not:

This may well be the cause of our issue:
Other thread on this forum explains what we're looking at.
Windows 10 Can't Display More than 512 Apps in the Start Menu - Windows 10 Forums

Thanks very much for all your input on this. I don't think the 512 apps limit is the problem as I am nowhere near that number (200 at the highest possible count) but definitely a result of the transition from 7 to 10. I wonder if anyone else has some input as I can't believe we are the only ones who have seen this?

They were all correctly installed in Win 7 - just not appearing in Win 10. For example - this is the list to uninstall with just the few programs installed since the update.