lockapp.exe is a program which is most likely NOT a virus or malware. So, if lockapp.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your system is virus-free, it is still recommended to run a good antivirus with a good track record, in order to yourself your system against threats.
This application is usually found in C:\Windows\SystemApps\Microsoft.LockApp_cw5n1h2txyewy\LockApp.exe.
The MD5 checksum for this executable is bc9eb378968ec3629414fa522c885b49.
This application is NOT registered as a Windows service. This is very good.
lockapp.exe appears to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This is a x64 executable. It runs using the full capacity of modern CPUs.
The description written in the exe is LockApp.exe.
File version extracted from the file 10.0.17763.1 (WinBuild.160101.0800).
Maker Microsoft Corporation.
Legal copyright © Microsoft Corporation. All rights reserved..
lockapp.exe has a digital signature. Nowadays most serious software applications are digitally signed.
The digital signature found in lockapp.exe verifies as ok. This is excellent.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This program does NOT have an uninstall command stored in registry.