You could try using the troubleshooter below to clean up and uninstall "Dell Audio", then try reinstalling it to see if its search results may work afterwards.
Program Install and Uninstall Troubleshooter in Windows Windows 10 Apps Features Tutorials
Didn't work :/
Hi DJ…
I had the same issue last week. Not with all programs butwith random ones e.g. Notepad, Snipping Tool, Macrium Reflect and others.
The issue was definitely only with my account as anotheraccount on the same PC was fine.
I tried re-indexing but that didn’t work.
I eventually found this site and this solution worked atreat JAll credit goes to them. (Hope it's OK to post the link)
http://www.urtech.ca/2016/08/solved-video-how-to-hard-reset-or-remove-cortana-in-windows-10/
(I followed the “LONG VERSION for Regular Folks” by theway.)
I also own a Dell with Dell Audio installed and by chance, Iupdated it the other day. When I saw your issue this morning, I tried searching my PCfor Dell Audio – it wasn’t even found but the program would openOK from the start menu, so looks like the issue is caused by the update install.
I reset Cortana again and Dell Audio now appears whensearched for and also opens OK from the result.
Hope this helps.
Al…
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