Hi Bob,
- Did this issue occur after upgrading to Windows 8.1?
Sfc /scannow will inspect all of the important Windows files on your computer, including Windows DLL files. If System File Checker finds an issue with any of these protected files, it will replace it.
Follow the steps:
a) Press “Windows Key + Q Key” to open Charms Bar.
b) Type “cmd” without quotes in the search box.
c) On the left pane, right click on the “cmd” option and select “Run as Administrator”.
d) Type ‘sfc /scannow’ without quotes and hit enter. Once this is done, restart the computer and check the status.
You can go through the link below as a reference.
Indexing and Search: Frequently asked questions: http://windows.microsoft.com/en-IN/windows-8/search-index-faq
Let us know about the status of the issue. We would be happy to help you further.