Microsoft had to rush up Windows 10 by several months because they wanted the “Back to School” sales. It seems to have an impact on the quality of the OS because to me, Windows 10 is one of the buggiest OSes yet to come out from the company based in Redmond.
One such issue is related to Windows Search. Microsoft have never gotten Search working properly on any OS after Windows Vista. Contrary to the popular backlashing, Vista was awesome with Search: super fast (even searching from non-indexed locations) and accurate. Windows 7, 8, 8.1 all have been messy. Files do not show up on search results even though you can clearly see they are there by browsing from the Windows Explorer.
Anyways, this bug in Windows 10 is that it shows “We’re getting search ready” on the top of the Search menu, even when the Indexing has been completed. Search would not be able to find most of the files during this time.
For example, it cannot find Windows Update entry. This is just an example; it cannot find anything useful. Apps do show up though.
I tried re-indexing, turning the Windows Search service OFF and ON and even reverting to the only Search Locations that are indexed by default. None of that fixed the issue.
But finally I managed to fix it. I deleted the index manually and let it be rebuilt.