You’re probably already familiar with the concept of running a program in Windows with the highest possible privileges by right-clicking and choosing “Run as Administrator…” but how do you install a .MSI file that way, since right-clicking doesn’t offer the “Run as Administrator” option?
Easy! To get a .MSI file to install with administrative privileges, simply run an elevated command prompt (i.e., find the “Command Prompt” shortcut on the Start Menu (or create a shortcut to cmd.exe), and right-click it, choosing to “Run as Administrator”), and type this:
msiexec /i filename.msi
That’s it!