Build crash

When i run
D:\VS\VC\npcap-1.88>build_sdk.bat

** Visual Studio 2026 Developer Command Prompt v18.9.1
** Copyright (c) 2026 Microsoft Corporation

[vcvarsall.bat] Environment initialized for: 'x86'
MSBuild version 18.9.1+a81b43525 for .NET Framework
Build started 20.08.2026 16:56:29.
..................
I have this below:

   ClCompile:
     C:\VS2026\Prod\VC\Tools\MSVC\14.51.36231\bin\HostX86\x86\CL.exe /c /Zi /nologo /W3 /WX- /diagnostics:column /O2 /Oy- /GL /D HAVE_WFP_LOOPBACK_SUPPORT /D HAVE_RX_SUPPORT /D HAVE_DO
     T11_SUPPORT /D STD_CALL /D NDIS650 /D NDIS685 /D NDIS689 /D WINVER=0x0A00 /D _WIN32_WINNT=0x0A00 /D NTDDI_VERSION=0x0A000000 /Gm- /EHsc /MD /GS /fp:precise /Zc:wchar_t /Zc:forScop
     e /Zc:inline /Fo"Win10 Release\\" /Fd"Win10 Release\vc145.pdb" /external:W3 /Gd /TC /analyze- /FC /errorReport:queue Loopback.c Openclos.c Packet.c Read.c win_bpf_filter.c Write.c
     Loopback.c
     Openclos.c
 3>D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxpr
   oj]
     (compiling source file 'Loopback.c')

 3>D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxpr
   oj]
     (compiling source file 'Openclos.c')

     Packet.c
 3>D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxpr
   oj]
     (compiling source file 'Packet.c')

     Read.c
 3>D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxpr
   oj]
     (compiling source file 'Read.c')

     win_bpf_filter.c
 3>D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxpr
   oj]
     (compiling source file 'win_bpf_filter.c')

     Write.c
 3>D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxpr
   oj]
     (compiling source file 'Write.c')

Attempting to cancel the build...
3>Done Building Project "D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxproj" (default targets) -- FAILED.
1>Done Building Project "D:\VS\VC\npcap-1.88\packetWin7\vs14\npcap.sln" (Build target(s)) -- FAILED.

Build FAILED.

   "D:\VS\VC\npcap-1.88\packetWin7\vs14\npcap.sln" (Build target) (1) ->
   "D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcxproj" (default target) (3) ->
   (ClCompile target) ->
     D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcx
   proj]
     D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcx
   proj]
     D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcx
   proj]
     D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcx
   proj]
     D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcx
   proj]
     D:\VS\VC\npcap-1.88\packetWin7\npf\npf\stdafx.h(76,10): error C1083: Cannot open include file: 'ntifs.h': No such file or directory [D:\VS\VC\npcap-1.88\packetWin7\npf\npf\npf.vcx
   proj]

0 Warning(s)
6 Error(s)

Start with build_sdk.bat and packetWin7\pf\pf\stdafx.h, then inspect the ncap.sln and pf.vcxproj configuration around the reported ClCompile invocation. Re-run the build and confirm the project no longer reports C1083 for ntifs.h.