Thanks. Do you know of a way to check that? For some reason, my old FF was 32 bit. I know I’d tried to install the 64 bit version but for some reason, the 32 bit was always the one that ran.
“The new Firefox is also a 64-bit application when installed on a 64-bit version of Windows”
https://www.pcmag.com/news/357352/firefox-quantum-offers-huge-leap-in-speed-usability