I upgraded windows 7 Pro SP1 to windows 10 but rolled back as could not find much use. On reversal , installed programs folders/subfolders in start menu showing short cut/empty, lost link /permission in security tab through properties though programs and features through control panel list all the installed programs and also in the start menu but can not be activated/started which appears to be an issue of change in permission of all programs. These can be restored by going to properties and reassigning permission but has to be done for each subfolder/short cut.
Is there any simplified/unified system through which all folders/subfolders/permissions can be restored rather than doing it one by one. Any guidance shall be highly appreciated please