For unknown reasons "Save All" doesn't save the vsprops files.
diff --git a/PCbuild9/pyd.vsprops b/PCbuild9/pyd.vsprops
index 7600ee6..2a69d95 100644
--- a/PCbuild9/pyd.vsprops
+++ b/PCbuild9/pyd.vsprops
@@ -7,7 +7,7 @@
 	>
 	<Tool
 		Name="VCCLCompilerTool"
-		PreprocessorDefinitions="NDEBUG;_USRDLL"
+		PreprocessorDefinitions="NDEBUG"
 		RuntimeLibrary="2"
 	/>
 	<Tool
diff --git a/PCbuild9/pyd_d.vsprops b/PCbuild9/pyd_d.vsprops
index 6964c84..8fc10b9 100644
--- a/PCbuild9/pyd_d.vsprops
+++ b/PCbuild9/pyd_d.vsprops
@@ -9,7 +9,7 @@
 		Name="VCCLCompilerTool"
 		Optimization="0"
 		InlineFunctionExpansion="0"
-		PreprocessorDefinitions="_DEBUG;_USERDLL"
+		PreprocessorDefinitions="_DEBUG"
 		RuntimeLibrary="3"
 	/>
 	<Tool
diff --git a/PCbuild9/pyproject.vsprops b/PCbuild9/pyproject.vsprops
index e1c9023..76a7733 100644
--- a/PCbuild9/pyproject.vsprops
+++ b/PCbuild9/pyproject.vsprops
@@ -11,7 +11,7 @@
 		Optimization="2"
 		InlineFunctionExpansion="1"
 		AdditionalIncludeDirectories="..\Include; ..\PC"
-		PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
+		PreprocessorDefinitions="WIN32;_CRT_SECURE_NO_DEPRECATE"
 		StringPooling="true"
 		ExceptionHandling="0"
 		RuntimeLibrary="0"