searchui.exe is a program which is most likely NOT a virus. So, if searchui.exe is on your computer, it is most likely ok, and will NOT cause problems. Even if your PC is virus-free, it is still recommended to use a well-known antivirus with a good detection rate, in order to defend your system against potential security problems.
Usually, the default filename and folder where the program is stored is
C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe.
The MD5 checksum for this file is e2ea03ea2dc2d07bda672ffa4fa8fb6c.
This program does NOT run as a Windows service. This is usually a good sign.
This program uses the Internet to communicate. In this day and age this is ok. For example, most of the programs on your computer check for new updates. In order to do this, Internet communications are necessary.
searchui.exe appears to use the functions of Windows SFC (System File Checker) or Windows File Protection.
64-bit code has been detected. This application can exploit the full power of a current computer cpu.
The description extracted from the file is Search and Cortana application.
File version stored as a property 10.0.15063.332 (WinBuild.160101.0800).
Maker Microsoft Corporation.
Legal copyright notice © Microsoft Corporation. All rights reserved..
searchui.exe has a digital signature. Nowadays most serious programs are digitally signed.
The digital signature attached to searchui.exe verifies as ok. This is very good.
Digital certificate name: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This application does NOT have an uninstall routine stored in registry.