diff --git a/VC2008/CryptoPP.vcproj b/VC2008/CryptoPP.vcproj
index a818e9aa1..f44729d8a 100644
--- a/VC2008/CryptoPP.vcproj
+++ b/VC2008/CryptoPP.vcproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="windows-1250"?>
 <VisualStudioProject
 	ProjectType="Visual C++"
-	Version="9,00"
+	Version="9.00"
 	Name="CryptoPP"
 	ProjectGUID="{3423EC9A-52E4-4A4D-9753-EDEBC38785EF}"
 	RootNamespace="cryptlib"
@@ -60,6 +60,7 @@
 				WarningLevel="3"
 				SuppressStartupBanner="true"
 				DebugInformationFormat="3"
+				DisableSpecificWarnings="4702"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"
diff --git a/src/Globals.h b/src/Globals.h
index 58badf4dd..a761da404 100644
--- a/src/Globals.h
+++ b/src/Globals.h
@@ -14,7 +14,19 @@
 	#pragma warning(disable:4481)
 
 	// Disable some warnings that we don't care about:
-	#pragma warning(disable:4100)
+	#pragma warning(disable:4100) // Unreferenced formal parameter
+    
+    // Useful warnings from warning level 4:
+	#pragma warning(3 : 4189) // Local variable is initialized but not referenced
+	#pragma warning(3 : 4702) // Unreachable code
+	#pragma warning(3 : 4245) // Conversion from 'type1' to 'type2', signed/unsigned mismatch
+	#pragma warning(3 : 4389) // Signed/unsigned mismatch
+	#pragma warning(3 : 4701) // Potentially unitialized local variable used
+	#pragma warning(3 : 4244) // Conversion from 'type1' to 'type2', possible loss of data
+	#pragma warning(3 : 4310) // Cast truncates constant value
+	#pragma warning(3 : 4505) // Unreferenced local function has been removed
+	#pragma warning(3 : 4127) // Conditional expression is constant
+	#pragma warning(3 : 4706) // Assignment within conditional expression
 
 	#define OBSOLETE __declspec(deprecated)
 
@@ -192,7 +204,7 @@ typedef unsigned short     UInt16;
 #ifdef  _DEBUG
 	#define ASSERT( x ) ( !!(x) || ( LOGERROR("Assertion failed: %s, file %s, line %i", #x, __FILE__, __LINE__ ), assert(0), 0 ) )
 #else
-	#define ASSERT(x) ((void)0)
+	#define ASSERT(x) ((void)(x))
 #endif
 
 // Pretty much the same as ASSERT() but stays in Release builds
diff --git a/src/OSSupport/CriticalSection.h b/src/OSSupport/CriticalSection.h
index 1bfe81439..73a71f5e1 100644
--- a/src/OSSupport/CriticalSection.h
+++ b/src/OSSupport/CriticalSection.h
@@ -14,9 +14,14 @@ public:
 	void Lock(void);
 	void Unlock(void);
 	
+	// IsLocked/IsLockedByCurrentThread are only used in ASSERT statements, but because of the changes with ASSERT they must always be defined
+	// The fake versions (in Release) will not effect the program in any way
 	#ifdef _DEBUG
 	bool IsLocked(void);
 	bool IsLockedByCurrentThread(void);
+	#else
+	bool IsLocked(void) { return false; }
+	bool IsLockedByCurrentThread(void) { return false; }
 	#endif  // _DEBUG
 	
 private:
diff --git a/src/Protocol/Protocol132.cpp b/src/Protocol/Protocol132.cpp
index 46ac4ef89..ab15509b7 100644
--- a/src/Protocol/Protocol132.cpp
+++ b/src/Protocol/Protocol132.cpp
@@ -5,7 +5,6 @@
 
 #include "Globals.h"
 #include "ChunkDataSerializer.h"
-#include "cryptopp/randpool.h"
 #include "Protocol132.h"
 #include "../Root.h"
 #include "../Server.h"
@@ -19,8 +18,20 @@
 #include "../WorldStorage/FastNBT.h"
 #include "../StringCompression.h"
 
+#ifdef _MSC_VER
+	#pragma warning(push)
+	#pragma warning(disable:4127)
+	#pragma warning(disable:4244)
+	#pragma warning(disable:4231)
+	#pragma warning(disable:4189)
+	#pragma warning(disable:4702)
+#endif
 
+#include "cryptopp/randpool.h"
 
+#ifdef _MSC_VER
+	#pragma warning(pop)
+#endif
 
 
 #define HANDLE_PACKET_READ(Proc, Type, Var) \
diff --git a/src/Protocol/Protocol132.h b/src/Protocol/Protocol132.h
index f76272b8d..d36384a88 100644
--- a/src/Protocol/Protocol132.h
+++ b/src/Protocol/Protocol132.h
@@ -10,9 +10,23 @@
 #pragma once
 
 #include "Protocol125.h"
+
+#ifdef _MSC_VER
+	#pragma warning(push)
+	#pragma warning(disable:4127)
+	#pragma warning(disable:4244)
+	#pragma warning(disable:4231)
+	#pragma warning(disable:4189)
+	#pragma warning(disable:4702)
+#endif
+
 #include "cryptopp/modes.h"
 #include "cryptopp/aes.h"
 
+#ifdef _MSC_VER
+	#pragma warning(pop)
+#endif
+
 
 
 
diff --git a/src/Protocol/Protocol14x.cpp b/src/Protocol/Protocol14x.cpp
index 28122034c..926fe6ee8 100644
--- a/src/Protocol/Protocol14x.cpp
+++ b/src/Protocol/Protocol14x.cpp
@@ -16,7 +16,6 @@ Implements the 1.4.x protocol classes representing these protocols:
 #include "../Root.h"
 #include "../Server.h"
 #include "../ClientHandle.h"
-#include "cryptopp/randpool.h"
 #include "../Item.h"
 #include "ChunkDataSerializer.h"
 #include "../Entities/Player.h"
@@ -25,8 +24,20 @@ Implements the 1.4.x protocol classes representing these protocols:
 #include "../Entities/Pickup.h"
 #include "../Entities/FallingBlock.h"
 
+#ifdef _MSC_VER
+	#pragma warning(push)
+	#pragma warning(disable:4127)
+	#pragma warning(disable:4244)
+	#pragma warning(disable:4231)
+	#pragma warning(disable:4189)
+	#pragma warning(disable:4702)
+#endif
 
+#include "cryptopp/randpool.h"
 
+#ifdef _MSC_VER
+	#pragma warning(pop)
+#endif
 
 
 #define HANDLE_PACKET_READ(Proc, Type, Var) \
diff --git a/src/Protocol/Protocol17x.h b/src/Protocol/Protocol17x.h
index cc0eda1e7..23ff2365d 100644
--- a/src/Protocol/Protocol17x.h
+++ b/src/Protocol/Protocol17x.h
@@ -16,9 +16,23 @@ Declares the 1.7.x protocol classes:
 
 #include "Protocol.h"
 #include "../ByteBuffer.h"
+
+#ifdef _MSC_VER
+	#pragma warning(push)
+	#pragma warning(disable:4127)
+	#pragma warning(disable:4244)
+	#pragma warning(disable:4231)
+	#pragma warning(disable:4189)
+	#pragma warning(disable:4702)
+#endif
+
 #include "cryptopp/modes.h"
 #include "cryptopp/aes.h"
 
+#ifdef _MSC_VER
+	#pragma warning(pop)
+#endif
+
 
 
 
diff --git a/src/Server.h b/src/Server.h
index 1f94bb3da..e62c4c7b7 100644
--- a/src/Server.h
+++ b/src/Server.h
@@ -11,9 +11,24 @@
 
 #include "OSSupport/SocketThreads.h"
 #include "OSSupport/ListenThread.h"
+
+#include "RCONServer.h"
+
+#ifdef _MSC_VER
+	#pragma warning(push)
+	#pragma warning(disable:4127)
+	#pragma warning(disable:4244)
+	#pragma warning(disable:4231)
+	#pragma warning(disable:4189)
+	#pragma warning(disable:4702)
+#endif
+
 #include "cryptopp/rsa.h"
 #include "cryptopp/randpool.h"
-#include "RCONServer.h"
+
+#ifdef _MSC_VER
+	#pragma warning(pop)
+#endif