diff --git a/scripts/toolchains/osx.cmake b/scripts/toolchains/osx.cmake
index 2989588b15d070..6b37425d15e0e9 100644
--- a/scripts/toolchains/osx.cmake
+++ b/scripts/toolchains/osx.cmake
@@ -44,9 +44,6 @@ if(NOT _VCPKG_OSX_TOOLCHAIN)
     if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
         if(CMAKE_SYSTEM_PROCESSOR STREQUAL CMAKE_HOST_SYSTEM_PROCESSOR)
             set(CMAKE_CROSSCOMPILING OFF CACHE STRING "")
-        elseif(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "ARM64")
-            # arm64 macOS can run x64 binaries
-            set(CMAKE_CROSSCOMPILING OFF CACHE STRING "")
         endif()
 
         if(NOT DEFINED CMAKE_SYSTEM_VERSION)
diff --git a/scripts/toolchains/windows.cmake b/scripts/toolchains/windows.cmake
index 6520329f2373bd..793d015bb7251f 100644
--- a/scripts/toolchains/windows.cmake
+++ b/scripts/toolchains/windows.cmake
@@ -43,12 +43,6 @@ if(NOT _VCPKG_WINDOWS_TOOLCHAIN)
     if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
         if(CMAKE_SYSTEM_PROCESSOR STREQUAL CMAKE_HOST_SYSTEM_PROCESSOR)
             set(CMAKE_CROSSCOMPILING OFF CACHE STRING "")
-        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86")
-            # any of the four platforms can run x86 binaries
-            set(CMAKE_CROSSCOMPILING OFF CACHE STRING "")
-        elseif(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "ARM64")
-            # arm64 can run binaries of any of the four platforms after Windows 11
-            set(CMAKE_CROSSCOMPILING OFF CACHE STRING "")
         endif()
 
         if(NOT DEFINED CMAKE_SYSTEM_VERSION)