@TonyC Actually I am now in the same situation 😬 I am following these instructions https://defensivedepth.com/2018/04/25/bundling-custom-configs-with-osquery-msi/ and at Step 3

.\tools\make-win64-binaries.bat

the script tells me

MSBUILD : error MSB1009: Project file does not exist

. I am not sure where I went wrong, since

.\tools\make-win64-dev-env.bat

exists without error... Any idea for me? ¯\_(ツ)_/¯

Have you tried closing and re-opening your shell? Also is this your first provision? You may need a reboot as visual studio requires one, and can you share output of running the provision and build scripts?