diff --git a/CHANGES b/CHANGES
index 0b9887545..13c235b8d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -45,6 +45,7 @@ Bugfixes:
  - Qt: Fix crash when adjusting settings after closing a game
  - Qt: Fix crash when starting GDB stub after closing a game
  - Qt: Fix patch loading while a game is running
+ - Util: Fix sockets on Windows
 Misc:
  - GBA Audio: Change internal audio sample buffer from 32-bit to 16-bit samples
  - GBA Memory: Simplify memory API and use fixed bus width
diff --git a/src/platform/qt/GBAApp.cpp b/src/platform/qt/GBAApp.cpp
index 6605d91aa..ca5ae51e1 100644
--- a/src/platform/qt/GBAApp.cpp
+++ b/src/platform/qt/GBAApp.cpp
@@ -24,6 +24,8 @@ GBAApp::GBAApp(int& argc, char* argv[])
 	SDL_Init(SDL_INIT_NOPARACHUTE);
 #endif
 
+	SocketSubsystemInit();
+
 	QApplication::setApplicationName(PROJECT_NAME);
 	QApplication::setApplicationVersion(PROJECT_VERSION);
 
diff --git a/src/util/socket.h b/src/util/socket.h
index 546f59c18..a66881323 100644
--- a/src/util/socket.h
+++ b/src/util/socket.h
@@ -42,18 +42,35 @@ struct Address {
 	};
 };
 
-static inline void SocketSubsystemInitialize() {
+static inline void SocketSubsystemInit() {
 #ifdef _WIN32
-	WSAStartup(MAKEWORD(2, 2), 0);
+	WSADATA data;
+	WSAStartup(MAKEWORD(2, 2), &data);
+#endif
+}
+
+static inline int SocketError() {
+#ifdef _WIN32
+	return WSAGetLastError();
+#else
+	return errno;
+#endif
+}
+
+static inline bool SocketWouldBlock() {
+#ifdef _WIN32
+	return SocketError() == WSAEWOULDBLOCK;
+#else
+	return SocketError() == EWOULDBLOCK || SocketError() == EAGAIN;
 #endif
 }
 
 static inline ssize_t SocketSend(Socket socket, const void* buffer, size_t size) {
-	return write(socket, buffer, size);
+	return send(socket, buffer, size, 0);
 }
 
 static inline ssize_t SocketRecv(Socket socket, void* buffer, size_t size) {
-	return read(socket, buffer, size);
+	return recv(socket, buffer, size, 0);
 }
 
 static inline Socket SocketOpenTCP(int port, const struct Address* bindAddress) {
@@ -87,7 +104,7 @@ static inline Socket SocketOpenTCP(int port, const struct Address* bindAddress)
 	}
 	if (err) {
 		close(sock);
-		return -1;
+		return INVALID_SOCKET;
 	}
 	return sock;
 }
@@ -123,7 +140,7 @@ static inline Socket SocketConnectTCP(int port, const struct Address* destinatio
 
 	if (err) {
 		close(sock);
-		return -1;
+		return INVALID_SOCKET;
 	}
 	return sock;
 }