Try this to repair tile database:
https://community.spiceworks.com/how_to/125068-...Before you reported back it was now working, I gave you over a dozen fixes for "Microsoft.Windows.ShellExperienceHost and Microsoft.Windows.Cortana applications need to be installed correctly" which took me close to an hour to research. Please go back and try those fixes next.
I will give that link a try..
Im guessing it will only work if the menu works on the new account/s im making?
as for fixing shellexperincehost and cortana.. i have tried all the ones you linked already before.. iv also today ran repair / re-install commands for them both.. ShellExperienceHost actually did something in the shell (telling me it was running so i shut it down and ran the install again which it did) but the cortana one never tried to run anything at all..
ill go back over them and try them again though....