searchui.exe is a application which is probably NOT a virus or malware. So, if searchui.exe is on your PC, it is probably ok, and will NOT be a cause for concern. Even if your system is virus-free, it is still recommended to use a good antivirus with a good detection rate, in order to yourself your system against potential security problems.
Usually, the default name and directory where the program is stored is
C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe.
The MD5 checksum for this file is fa13d4cb09c8f2e90ad8b96070f693a3.
This application is NOT a Windows service. This is good.
searchui.exe appears to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This is a 64-bit executable. It runs using the full capacity of nowadays' CPUs.
The description present in the file is Search and Cortana application.
File version extracted from the file 10.0.15063.0 (WinBuild.160101.0800).
Maker Microsoft Corporation.
Legal copyright notice © Microsoft Corporation. All rights reserved..
searchui.exe has a digital signature. Today most serious software applications are digitally signed.
The digital signature extracted from searchui.exe checks out perfectly. This is most likely a clean, ok program.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This program does NOT have an uninstall command set up in registry.