diff --git a/DirectXTex/DirectXTexUtil.cpp b/DirectXTex/DirectXTexUtil.cpp
index fbd53f7..ffc347b 100644
--- a/DirectXTex/DirectXTexUtil.cpp
+++ b/DirectXTex/DirectXTexUtil.cpp
@@ -277,10 +277,13 @@ IWICImagingFactory* DirectX::GetWICFactory(bool& iswic2) noexcept
 
     static INIT_ONCE s_initOnce = INIT_ONCE_STATIC_INIT;
 
-    InitOnceExecuteOnce(&s_initOnce,
+    if (!InitOnceExecuteOnce(&s_initOnce,
         InitializeWICFactory,
         nullptr,
-        reinterpret_cast<LPVOID*>(&g_Factory));
+        reinterpret_cast<LPVOID*>(&g_Factory)))
+    {
+        return nullptr;
+    }
 
     iswic2 = g_WIC2;
     return g_Factory;
diff --git a/ScreenGrab/ScreenGrab.cpp b/ScreenGrab/ScreenGrab.cpp
index df74a7a..78bf6e8 100644
--- a/ScreenGrab/ScreenGrab.cpp
+++ b/ScreenGrab/ScreenGrab.cpp
@@ -751,10 +751,13 @@ namespace
         static INIT_ONCE s_initOnce = INIT_ONCE_STATIC_INIT;
 
         IWICImagingFactory* factory = nullptr;
-        InitOnceExecuteOnce(&s_initOnce,
+        if (!InitOnceExecuteOnce(&s_initOnce,
             InitializeWICFactory,
             nullptr,
-            reinterpret_cast<LPVOID*>(&factory));
+            reinterpret_cast<LPVOID*>(&factory)))
+        {
+            return nullptr;
+        }
 
         return factory;
     }
diff --git a/ScreenGrab/ScreenGrab12.cpp b/ScreenGrab/ScreenGrab12.cpp
index 8aaa5de..c977229 100644
--- a/ScreenGrab/ScreenGrab12.cpp
+++ b/ScreenGrab/ScreenGrab12.cpp
@@ -828,10 +828,13 @@ namespace
         static INIT_ONCE s_initOnce = INIT_ONCE_STATIC_INIT;
 
         IWICImagingFactory2* factory = nullptr;
-        (void)InitOnceExecuteOnce(&s_initOnce,
+        if (!InitOnceExecuteOnce(&s_initOnce,
             InitializeWICFactory,
             nullptr,
-            reinterpret_cast<LPVOID*>(&factory));
+            reinterpret_cast<LPVOID*>(&factory)))
+        {
+            return nullptr;
+        }
 
         return factory;
     }
diff --git a/WICTextureLoader/WICTextureLoader.cpp b/WICTextureLoader/WICTextureLoader.cpp
index 240700c..5e256d7 100644
--- a/WICTextureLoader/WICTextureLoader.cpp
+++ b/WICTextureLoader/WICTextureLoader.cpp
@@ -208,10 +208,13 @@ namespace
         static INIT_ONCE s_initOnce = INIT_ONCE_STATIC_INIT;
 
         IWICImagingFactory* factory = nullptr;
-        (void)InitOnceExecuteOnce(&s_initOnce,
+        if (!InitOnceExecuteOnce(&s_initOnce,
             InitializeWICFactory,
             nullptr,
-            reinterpret_cast<LPVOID*>(&factory));
+            reinterpret_cast<LPVOID*>(&factory)))
+        {
+            return nullptr;
+        }
 
         return factory;
     }
diff --git a/WICTextureLoader/WICTextureLoader12.cpp b/WICTextureLoader/WICTextureLoader12.cpp
index 45cb828..0b86bd8 100644
--- a/WICTextureLoader/WICTextureLoader12.cpp
+++ b/WICTextureLoader/WICTextureLoader12.cpp
@@ -166,10 +166,13 @@ namespace
         static INIT_ONCE s_initOnce = INIT_ONCE_STATIC_INIT;
 
         IWICImagingFactory2* factory = nullptr;
-        (void)InitOnceExecuteOnce(&s_initOnce,
+        if (!InitOnceExecuteOnce(&s_initOnce,
             InitializeWICFactory,
             nullptr,
-            reinterpret_cast<LPVOID*>(&factory));
+            reinterpret_cast<LPVOID*>(&factory)))
+        {
+            return nullptr;
+        }
 
         return factory;
     }