I often need to install software on my work computer, where I do not have admin access. Most programs don't actually require admin access at all provided you install into your user profile directory (C:\Users\...) instead of Program Files. Unfortunately, many installers don't have support for per-user installations and request elevation anyway.
7-Zip is an example of one such program. But you can work around this issue if you download the MSI installer and use the following command line to open it.
msiexec /i 7z1602-x64.msi INSTALLDIR=%USERPROFILE%\7-Zip\ MSIINSTALLPERUSER=1
As you might have guessed, the MSIINSTALLPERUSER=1 flag on the command line is doing the work here by requesting a per-user install. The installer will succeed without attempting elevation.
