https://support.microsoft.com/en ... 10-update-kb4512941
Known issues in this update
Symptom Workaround
Microsoft is getting reports that
a small number of users may not receive results when using Windows Desktop Search and may see high CPU usage from SearchUI.exe. This issue only occurs on devices that have disabled searching the web using Windows Desktop Search.
We are working on a resolution and estimate a solution will be available in mid-September.