Can't build Project, Spectre-mitigated libraries missing

[Thomas Weinzierl]

We are happy to answer your questions about the code or discuss technical ideas.

Please complete the following checklist (by adding [x]):

• I have searched open and closed issues for duplicates
• This isn't a feature request
• This is not a report about my app not working as expected

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I can't build the Solution.
Error:

30>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(486,5): error MSB8040: Spectre-mitigated libraries are required for this project. Install them from the Visual Studio installer (Individual components tab) for any toolsets and architectures being used. Learn more: https://aka.ms/Ofhn4c
31> ProtonVPN.Vpn.Test -> C:\Users\thoma\Documents\win-app\src\bin\ProtonVPN.Vpn.Test.dll
32>------ Build started: Project: ProtonVPN.InstallActions, Configuration: Release Win32 ------
33>------ Build started: Project: ProtonVPN.Service.Test, Configuration: Release Any CPU ------
33> ProtonVPN.Service.Test -> C:\Users\thoma\Documents\win-app\src\bin\ProtonVPN.Service.Test.dll
32>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(486,5): error MSB8040: Spectre-mitigated libraries are required for this project. Install them from the Visual Studio installer (Individual components tab) for any toolsets and architectures being used. Learn more: https://aka.ms/Ofhn4c
32>Done building project "ProtonVPN.InstallActions.vcxproj" -- FAILED.

I have all Components listen in the BUILD.md installed.
Of course I have:
C++ ATL for latest v142 build tools with Spectre Mitigations (x86 & x64)
MSVC v142-VS 2019 C++ x64/x86 Spectre-mitigated libs (v14.24)

So what is the problem?