searchui.exe is a application which is probably NOT a virus or malware. So, if searchui.exe is on your computer, it is probably ok, and will NOT cause problems. Even if your PC is clean, we still advise you to run a good antivirus with a good track record, in order to defend your system against potential security problems.
Usually, this program is found in C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe.
The MD5 fingerprint for this executable is 456ec8add234a97e7e4dface9daba5eb.
This application is NOT registered as a Windows service. This is very good.
This application uses the Internet to communicate. In this day and age this is quite normal. For example, most of the apps on your PC check for new updates. In order to do this, Internet communications are required.
searchui.exe appears to use the functions of Windows SFC (System File Checker) or Windows File Protection.
This is a x64 executable. It uses the full capacity of nowadays' CPUs.
The description extracted from the exe is Search and Cortana application.
File version 10.0.17763.719 (WinBuild.160101.0800).
Maker Microsoft Corporation.
Intellectual property rights notice © Microsoft Corporation. All rights reserved..
searchui.exe is digitally signed. Today the large majority of clean programs are digitally signed.
The digital signature found in searchui.exe verifies as ok. This is most likely a clean, ok program.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This executable does NOT have an uninstall command set up in registry.