Major Description
windows-latest builds will be affected by
https://github.blog/changelog/2026-02-05-github-actions-early-february-2026-updates/#windows-server-2025-with-visual-studio-2026-image-now-available-for-github-hosted-runners
The migration to the new Visual Studio 2026 image will start on June 8, 2026.
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Issue happens on 2 builds (only): (Toolset 14 (= latest), Release)
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build-msvc (windows-2025-vs2026, 14, i386, Release, 0x502):
2026-05-13T03:26:55.6989073Z FAILED: [code=2] dll/win32/msvcrt/CMakeFiles/msvcrt_static.dir/string.c.obj
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...
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2026-05-13T03:26:55.7945018Z D:\a\reactos\reactos\src\dll\win32\msvcrt\string.c(1276): error C2169: 'strncpy': intrinsic function, cannot be defined
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2026-05-13T03:26:55.8095840Z D:\a\reactos\reactos\src\dll\win32\msvcrt\string.c(3330): error C2169: 'strncmp': intrinsic function, cannot be defined
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2026-05-13T03:26:55.9697863Z FAILED: [code=2] dll/win32/msvcrt/CMakeFiles/msvcrt_static.dir/wcs.c.obj
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2026-05-13T03:26:56.0031118Z D:\a\reactos\reactos\src\dll\win32\msvcrt\wcs.c(518): error C2169: 'wcsncmp': intrinsic function, cannot be defined
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2026-05-13T03:26:56.0299405Z D:\a\reactos\reactos\src\dll\win32\msvcrt\wcs.c(2478): error C2169: 'wcsncpy': intrinsic function, cannot be defined
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2026-05-13T03:27:52.9196097Z FAILED: [code=2] sdk/lib/ucrt/CMakeFiles/ucrt.dir/string/wcsncmp.cpp.obj
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2026-05-13T03:27:52.9221703Z D:\a\reactos\reactos\src\sdk\lib\ucrt\string\wcsncmp.cpp(28): error C2169: 'wcsncmp': intrinsic function, cannot be defined
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2026-05-13T03:27:52.9751202Z FAILED: [code=2] sdk/lib/ucrt/CMakeFiles/ucrt.dir/string/wcsncpy.cpp.obj
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2026-05-13T03:27:52.9913521Z D:\a\reactos\reactos\src\sdk\lib\ucrt\string\wcsncpy.cpp(21): error C2169: 'wcsncpy': intrinsic function, cannot be defined
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build-msvc (windows-2025-vs2026, 14, amd64, Release, 0x502)):
2026-05-13T03:26:24.6291623Z FAILED: [code=2] sdk/lib/crt/CMakeFiles/libcntpr.dir/string/strncmp.c.obj
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...
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2026-05-13T03:26:24.6321410Z D:\a\reactos\reactos\src\sdk\lib\crt\string\tcsncmp.h(9): error C2169: 'strncmp': intrinsic function, cannot be defined
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026-05-13T03:26:24.6323778Z FAILED: [code=2] sdk/lib/crt/CMakeFiles/libcntpr.dir/string/strncpy.c.obj
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...
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2026-05-13T03:26:24.6354475Z D:\a\reactos\reactos\src\sdk\lib\crt\string\tcsncpy.h(9): error C2169: 'strncpy': intrinsic function, cannot be defined
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2026-05-13T03:26:24.8573267Z FAILED: [code=2] sdk/lib/crt/CMakeFiles/libcntpr.dir/string/wcsncmp.c.obj
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2026-05-13T03:26:24.8893940Z D:\a\reactos\reactos\src\sdk\lib\crt\string\tcsncmp.h(9): error C2169: 'wcsncmp': intrinsic function, cannot be defined
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2026-05-13T03:26:24.9190240Z FAILED: [code=2] sdk/lib/crt/CMakeFiles/libcntpr.dir/string/wcsncpy.c.obj
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2026-05-13T03:26:24.9222737Z D:\a\reactos\reactos\src\sdk\lib\crt\string\tcsncpy.h(9): error C2169: 'wcsncpy': intrinsic function, cannot be defined
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2026-05-13T03:27:25.9985385Z FAILED: [code=2] dll/win32/msvcrt/CMakeFiles/msvcrt_static.dir/string.c.obj
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...
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2026-05-13T03:27:26.0455447Z D:\a\reactos\reactos\src\dll\win32\msvcrt\string.c(1276): error C2169: 'strncpy': intrinsic function, cannot be defined
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2026-05-13T03:27:26.1004850Z D:\a\reactos\reactos\src\dll\win32\msvcrt\string.c(3330): error C2169: 'strncmp': intrinsic function, cannot be defined
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2026-05-13T03:27:26.3771604Z FAILED: [code=2] dll/win32/msvcrt/CMakeFiles/msvcrt_static.dir/wcs.c.obj
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...
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2026-05-13T03:27:26.4147629Z D:\a\reactos\reactos\src\dll\win32\msvcrt\wcs.c(518): error C2169: 'wcsncmp': intrinsic function, cannot be defined
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2026-05-13T03:27:26.4383728Z D:\a\reactos\reactos\src\dll\win32\msvcrt\wcs.c(2478): error C2169: 'wcsncpy': intrinsic function, cannot be defined
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...
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2026-05-13T03:28:48.6357693Z FAILED: [code=2] sdk/lib/ucrt/CMakeFiles/ucrt.dir/string/wcsncmp.cpp.obj
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2026-05-13T03:28:48.6674224Z D:\a\reactos\reactos\src\sdk\lib\ucrt\string\wcsncmp.cpp(28): error C2169: 'wcsncmp': intrinsic function, cannot be defined
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2026-05-13T03:28:48.7791061Z FAILED: [code=2] sdk/lib/ucrt/CMakeFiles/ucrt.dir/string/wcsncpy.cpp.obj
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2026-05-13T03:28:48.7993610Z D:\a\reactos\reactos\src\sdk\lib\ucrt\string\wcsncpy.cpp(21): error C2169: 'wcsncpy': intrinsic function, cannot be defined
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