I noticed that Windows 10 (build 18363) search didn't show the program .lnk shortcuts from the Start menu.
Here's my experiment:
I placed a test file in my "David" user folder and another one in Appdata. I made my Appdata folder visible just in case that helps. I double-checked that both of those folders either belong to "David" or "SYSTEM" and have the indexing option enabled. I configured Windows to index just my User folder and the Appdata folder and clicked the "Delete and Rebuild index" button. Then, I searched for the files with Windows search.
As you can see, the search menu successfully shows the files "Help Me 1.txt" and "Help Me 2.txt" from my user directory, but it fails to show the "Help Me 3.txt" from the Appdata folder. Also, the Indexing Options indicate that it has "423 files indexed", -- this is because there are a lot of protected operating system files.
In light of these results, I repeated this experiment with two other computers of the same build, and their results arrived at the same conclusion. This is not a personal issue. There are certain folders through which windows refuses to show the search results, even if they are indexed correctly.
Is there some way I could fix this and make the Windows search show the "Help Me 3.txt" file?