I am trying to install the TFAR Beta addon for Arma 3. When the installer is clicked on, It says, "Windows can't open this file type."

The system is Win 10 64 bit with a 64 bit version of TS3.
The TS version is 3.2.3, the addon version is 1.-1.0.312.
The user account is an admin on the OS.

Please help, thank you.