Windows MSI installer fails to run in a headless environment

I'm trying to setting up an automated windows testing environment for the FDB nodejs bindings and I'm running into an issue installing foundationdb via msiexec:

> msiexec /a foundationdb-5.1.5-x64.msi /passive /qn /norestart /log install.log

But the MSI is stubbornly refusing to run. I'm getting this error:

DEBUG: Error 2203:  Database: C:\foundationdb-5.1.5-x64.msi. Cannot open database file. System error -2147287035
MSI (s) (80:44) [21:08:54:011]: Product: FoundationDB -- The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2203. The arguments are: C:\foundationdb-5.1.5-x64.msi, -2147287035, 

The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2203. The arguments are: C:\foundationdb-5.1.5-x64.msi, -2147287035, 

(Neither my cmd window nor the MSI file is in the c:\ root directory. The problem persists even when I use an absolute path to the MSI).

If I run the installer from an admin cmd window I get a completely empty install.log instead.

Install.log file attached. install.log