diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5eb09a74e8..38b443326e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,7 +58,6 @@ if("${VCLIBS_TARGET_ARCHITECTURE}" STREQUAL "x86")
     # Note that we set _WIN32_WINNT to a high level to make declarations available, but still engage downlevel
     # runtime dynamic linking by setting our own _STL_WIN32_WINNT back to Windows XP.
     add_compile_definitions(_X86_ _VCRT_WIN32_WINNT=0x0501 _STL_WIN32_WINNT=0x0501)
-    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/arch:IA32>)
 elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "x64")
     set(VCLIBS_TARGET_ARCHITECTURE "x64")
     set(VCLIBS_I386_OR_AMD64 "amd64")
diff --git a/tests/std/tests/GH_002431_byte_range_find_with_unreachable_sentinel/test.cpp b/tests/std/tests/GH_002431_byte_range_find_with_unreachable_sentinel/test.cpp
index 4bbf13a56d..4a3c7fe556 100644
--- a/tests/std/tests/GH_002431_byte_range_find_with_unreachable_sentinel/test.cpp
+++ b/tests/std/tests/GH_002431_byte_range_find_with_unreachable_sentinel/test.cpp
@@ -65,10 +65,6 @@ int main() {
     disable_instructions(__ISA_AVAILABLE_SSE42);
     test_all_element_sizes(p, page);
 #endif // defined(_M_IX86) || defined(_M_X64)
-#if defined(_M_IX86)
-    disable_instructions(__ISA_AVAILABLE_SSE2);
-    test_all_element_sizes(p, page);
-#endif // defined(_M_IX86)
 
     VirtualFree(p, 0, MEM_RELEASE);
 }
diff --git a/tests/std/tests/VSO_0000000_vector_algorithms/test.cpp b/tests/std/tests/VSO_0000000_vector_algorithms/test.cpp
index 5f81721806..5a7a152041 100644
--- a/tests/std/tests/VSO_0000000_vector_algorithms/test.cpp
+++ b/tests/std/tests/VSO_0000000_vector_algorithms/test.cpp
@@ -1180,11 +1180,5 @@ int main() {
     test_various_containers();
     test_bitset(gen);
 #endif // defined(_M_IX86) || defined(_M_X64)
-#if defined(_M_IX86)
-    disable_instructions(__ISA_AVAILABLE_SSE2);
-    test_vector_algorithms(gen);
-    test_various_containers();
-    test_bitset(gen);
-#endif // defined(_M_IX86)
 #endif // _M_CEE_PURE
 }
diff --git a/tests/std/tests/floating_point_model_matrix.lst b/tests/std/tests/floating_point_model_matrix.lst
index cca86c70c4..7df38b8484 100644
--- a/tests/std/tests/floating_point_model_matrix.lst
+++ b/tests/std/tests/floating_point_model_matrix.lst
@@ -6,7 +6,6 @@ RUNALL_CROSSLIST
 *	PM_CL="/FIfenv_prefix.hpp /w14640 /Zc:threadSafeInit- /EHsc /std:c++latest"
 RUNALL_CROSSLIST
 *	PM_CL=""
-*	PM_CL="/arch:IA32"
 *	PM_CL="/arch:AVX2"
 *	PM_CL="/arch:VFPv4"
 RUNALL_CROSSLIST
diff --git a/tests/utils/stl/test/features.py b/tests/utils/stl/test/features.py
index c26e6697fe..36e4cd70cd 100644
--- a/tests/utils/stl/test/features.py
+++ b/tests/utils/stl/test/features.py
@@ -50,7 +50,6 @@ def getDefaultFeatures(config, litConfig):
         DEFAULT_FEATURES.append(Feature(name='edg_drop'))
 
     if litConfig.target_arch.casefold() == 'x86'.casefold():
-        DEFAULT_FEATURES.append(Feature(name='arch_ia32'))
         DEFAULT_FEATURES.append(Feature(name='arch_avx2'))
         DEFAULT_FEATURES.append(Feature(name='x86'))
 
diff --git a/tests/utils/stl/test/tests.py b/tests/utils/stl/test/tests.py
index b932c336fc..7217d49bab 100644
--- a/tests/utils/stl/test/tests.py
+++ b/tests/utils/stl/test/tests.py
@@ -290,8 +290,6 @@ def _parseFlags(self, litConfig):
                 self.requires.append('edg') # available for x64, see features.py
             elif flag[1:] == 'arch:AVX2':
                 self.requires.append('arch_avx2') # available for x86 and x64, see features.py
-            elif flag[1:] == 'arch:IA32':
-                self.requires.append('arch_ia32') # available for x86, see features.py
             elif flag[1:] == 'arch:VFPv4':
                 self.requires.append('arch_vfpv4') # available for arm, see features.py
             elif flag[1:] == 'MDd':