#msiexec.exe

The executable file msiexec.exe from Microsoft is the process called Windows Installer, which is a core system file of software Windows Installer – Unicode. This process is responsible for the installation and configuration of programs in the MSI format, which are the programs with the suffix .msi, .msp, and .appx. It launches during the system startup and runs as a background process that allows the user to add, modify, or delete programs based on Windows Installer and those installed as APPX package. It is located in the folder C:\Windows\System32 with a file size of 78.848 Kb.