Build started... 1>------ Build started: Project: Licensing, Configuration: Debug x64 ------ 1>AccountService.cpp 1>ActivationService.cpp 1>AutoActivation.cpp 1>KeyCheck.cpp 1>UpdateCheck.cpp 1>licenseform.cpp 1>licenseformbase.cpp 1>licensing.cpp 1>offlineactivationform.cpp 1>offlinetransferform.cpp 1>moc_licenseformbase.cpp 1>moc_offlinetransferform.cpp 1>moc_offlineactivationform.cpp 1>moc_licenseform.cpp 1>E:\Librerie\Qt\6.2\6.2.1\msvc2019_64\include\QtCore\qglobal.h(94,1): fatal error C1189: #error: "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler." (compiling source file .\GeneratedFiles\Debug\moc_offlineactivationform.cpp) 1>E:\Librerie\Qt\6.2\6.2.1\msvc2019_64\include\QtCore\qglobal.h(94,1): fatal error C1189: #error: "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler." (compiling source file .\GeneratedFiles\Debug\moc_licenseformbase.cpp) 1>E:\Librerie\Qt\6.2\6.2.1\msvc2019_64\include\QtCore\qglobal.h(94,1): fatal error C1189: #error: "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler." (compiling source file .\GeneratedFiles\Debug\moc_offlinetransferform.cpp) 1>E:\Librerie\Qt\6.2\6.2.1\msvc2019_64\include\QtCore\qglobal.h(94,1): fatal error C1189: #error: "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler." (compiling source file .\GeneratedFiles\Debug\moc_licenseform.cpp) 1>Done building project "Licensing.vcxproj" -- FAILED. ========== Build: 0 succeeded, 1 failed, 1 up-to-date, 0 skipped ==========