CAA development/compile question

I have a CAA development question.


Starting with V5-6R2021 I get the following compile errors. My V5-6R2020 solution compiles without any issues. This tells me there have been possible compiler requirement changes. The new solution was created using the 2020 solution settings. I just fix any specific paths to pickup the 2021 includes, libs etc.

Has anyone seens this? Is there a CAA area where this is better posted?

Rebuild started...
1>------ Rebuild All started: Project: Catia5Dll, Configuration: Release R31 x64 ------
1>STDAFX.CPP
1>*** CATIA V5R31 version ***
1>*** x64 platform ***
1>C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt\new.h(31): error C2143: syntax error: missing ';' before 'constant'
1>C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt\new.h(31): error C2382: 'std::set_new_handler': redefinition; different exception specifications
1>C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\new(26): note: see declaration of 'std::set_new_handler'
1>C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt\new.h(31): error C2059: syntax error: 'constant'
1>Done building project "Catia5Dll_2015.vcxproj" -- FAILED.
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========