From your other post about the PDF995 driver, we know you upgraded from BIAB 2016. That was a 32-bit program. BIAB 2021 gives you both a 32-bit version and a 64-bit version, and installs shortcuts for each.

If you can run 64-bit programs on your computer, you should, with one exception: if the plugins you use are limited to 32-bit, you might choose to use the 32-bit version of BIAB. Since you can start either one, and load the same song into either, even back and forth, you actually have the most flexibility by having both versions available.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.