Since I’m constantly confused with these, I’ll just jot these down for me to reference later on.
- C:\Program Files\VSTPlugins – 64-bit VST2 plug-ins.
- C:\Program Files\Common Files\VST3 – 64-bit VST3 plug-ins. (Live 10.1 and later).
- C:\Program Files (x86)\VSTPlugins – 32-bit plug-ins.
Note: Live 10 is 64-bit only, so 32-bit plug-ins won’t appear in Live 10. Likewise 64-bit plug-ins won’t appear in 32-bit versions of Live.
https://help.ableton.com/hc/en-us/articles/209071729-Using-VST-plug-ins-on-Windows