Where does Windows install the plugins?Updated 5 days ago

On Windows, the installer puts the VST3 plugins in C:\Program Files\Common Files\VST3.

Point the DAW's plug-in scan at that folder, or run a full rescan. Then quit the DAW and open it again.

They are not installed in Program Files (x86). That folder is for 32-bit software. If the DAW is only looking there, it will not see the plugins, even though the installer finished.

You do not need to choose a different folder during installation.