If none of the replies below works, go to the Searchapp.exe and simply kill the process then quickly rename it in the folder it is in to something random before it restarts, and it will not restart.
That's how I did it.
If UAC tells you that you don't have permission, here is how to fix that:
"Winston M
Hi,
Let's analyze and identify the cause of the issue. Perform the steps provided.
To resolve the issue with permissions, I would suggest you to follow these steps:
a. Press Windows key + Q to search Settings.
b. Type “CMD”.
c. From the results, right click Command Prompt and Click Run as Administrator.
d. At the command prompt, type “takeown /f <foldername> /r /d y” without quotes and then press ENTER. (Replace <foldername> with the path of the folder).
e. Then, type “icacls <foldername> /grant administrators:F /T” without quotes and hit enter. (Replace <foldername> with the path of the folder).
NOTE: You have to change the line 'administrator' to your language for 'administrator' if you have something else than English setup.
Using the above mentioned commands, we have taken the ownership of the folder and then assigned the Administrators group Full Control Permissions for the folder.
If the issue still persists, you may refer to the steps mentioned by 'New Win8 user replied on October 29, 2012' in the similar discussion.
Permission error - Failed to enumerate objects in the container. Access is denied.
http://answers.microsoft.com/en-us/windows/forum/windows_8-security/permission-error-failed-to-enumerate-objects-in/93ea883f-853f-4981-a697-928bfbc71642
The steps mentioned are also applicable to Windows 8.1
Hope this information helps.