services

[kort3x]

I can't get install-msiproduct to work for applications which create a service - e.g. our anti virus solution
It keeps complaining about insufficient permissions (yes I am admin).

I this not working in general or am I missing something?

[heaths]

Even if you're an admin you have to install from an elevated environment. Right click on your terminal eg powershell.exe and select Run as Administrator.

If you are running elevated, try installing the MSI using msiexec. If that fails it's your MSI. The cmdlets just call the exact same APIs that msiexec does. Unlike msiexec, though, they don't have the ability to elevate on-demand (that functionality is not exposed via the APIs).