diff --git a/CMakeLists.txt b/CMakeLists.txt
index d4be6caf..877af0ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,6 +58,7 @@ set(SERVICE_SOURCE_FILES src/core/services/service_manager.cpp src/core/services
                          src/core/services/fs.cpp src/core/services/gsp_gpu.cpp src/core/services/gsp_lcd.cpp
                          src/core/services/ndm.cpp src/core/services/dsp.cpp src/core/services/cfg.cpp
                          src/core/services/ptm.cpp src/core/services/mic.cpp src/core/services/cecd.cpp
+                         src/core/services/ac.cpp
 )
 set(PICA_SOURCE_FILES src/core/PICA/gpu.cpp src/core/PICA/regs.cpp src/core/PICA/shader_unit.cpp
                       src/core/PICA/shader_interpreter.cpp
@@ -80,7 +81,7 @@ set(HEADER_FILES include/emulator.hpp include/helpers.hpp include/opengl.hpp inc
                  include/services/dsp.hpp include/services/cfg.hpp include/services/region_codes.hpp
                  include/fs/archive_save_data.hpp include/fs/archive_sdmc.hpp include/services/ptm.hpp
                  include/services/mic.hpp include/services/cecd.hpp include/renderer_gl/renderer_gl.hpp
-                 include/renderer_gl/surfaces.hpp include/renderer_gl/surface_cache.hpp
+                 include/renderer_gl/surfaces.hpp include/renderer_gl/surface_cache.hpp include/services/ac.hpp
 )
 
 set(THIRD_PARTY_SOURCE_FILES third_party/imgui/imgui.cpp
diff --git a/include/kernel/handles.hpp b/include/kernel/handles.hpp
index 890d0318..d38c4e55 100644
--- a/include/kernel/handles.hpp
+++ b/include/kernel/handles.hpp
@@ -10,6 +10,7 @@ namespace KernelHandles {
 		// Hardcoded handles
 		CurrentThread = 0xFFFF8000,  // Used by the original kernel
 		CurrentProcess = 0xFFFF8001, // Used by the original kernel
+        AC,
 		APT,  // App Title something service?
 		CECD, // Streetpass stuff?
 		CFG,  // CFG service (Console & region info)
@@ -22,7 +23,7 @@ namespace KernelHandles {
 		NDM,  // ?????
 		PTM,  // PTM service (Used for accessing various console info, such as battery, shell and pedometer state)
 
-		MinServiceHandle = APT,
+		MinServiceHandle = AC,
 		MaxServiceHandle = PTM,
 
 		GSPSharedMemHandle = MaxServiceHandle + 1, // Handle for the GSP shared memory
diff --git a/include/services/ac.hpp b/include/services/ac.hpp
new file mode 100644
index 00000000..2053ea21
--- /dev/null
+++ b/include/services/ac.hpp
@@ -0,0 +1,19 @@
+#pragma once
+#include "helpers.hpp"
+#include "kernel_types.hpp"
+#include "logger.hpp"
+#include "memory.hpp"
+
+class ACService {
+	Handle handle = KernelHandles::AC;
+	Memory& mem;
+	MAKE_LOG_FUNCTION(log, acLogger)
+
+	// Service commands
+	void setClientVersion(u32 messagePointer);
+
+public:
+	ACService(Memory& mem) : mem(mem) {}
+	void reset();
+	void handleSyncRequest(u32 messagePointer);
+};
\ No newline at end of file
diff --git a/include/services/cecd.hpp b/include/services/cecd.hpp
index 53c30b59..3a592a32 100644
--- a/include/services/cecd.hpp
+++ b/include/services/cecd.hpp
@@ -9,7 +9,7 @@ class CECDService {
 	Memory& mem;
 	MAKE_LOG_FUNCTION(log, cecdLogger)
 
-		// Service commands
+	// Service commands
 
 public:
 	CECDService(Memory& mem) : mem(mem) {}
diff --git a/include/services/service_manager.hpp b/include/services/service_manager.hpp
index d9903372..51b49710 100644
--- a/include/services/service_manager.hpp
+++ b/include/services/service_manager.hpp
@@ -4,6 +4,7 @@
 #include "kernel_types.hpp"
 #include "logger.hpp"
 #include "memory.hpp"
+#include "services/ac.hpp"
 #include "services/apt.hpp"
 #include "services/cecd.hpp"
 #include "services/cfg.hpp"
@@ -28,6 +29,7 @@ class ServiceManager {
 
 	MAKE_LOG_FUNCTION(log, srvLogger)
 
+    ACService ac;
 	APTService apt;
 	CECDService cecd;
 	CFGService cfg;
diff --git a/src/core/services/ac.cpp b/src/core/services/ac.cpp
new file mode 100644
index 00000000..cc1e3bd5
--- /dev/null
+++ b/src/core/services/ac.cpp
@@ -0,0 +1,30 @@
+#include "services/ac.hpp"
+
+namespace ACCommands {
+	enum : u32 {
+		SetClientVersion = 0x00400042
+	};
+}
+
+namespace Result {
+	enum : u32 {
+		Success = 0,
+	};
+}
+
+void ACService::reset() {}
+
+void ACService::handleSyncRequest(u32 messagePointer) {
+	const u32 command = mem.read32(messagePointer);
+	switch (command) {
+		case ACCommands::SetClientVersion: setClientVersion(messagePointer); break;
+		default: Helpers::panic("AC service requested. Command: %08X\n", command);
+	}
+}
+
+void ACService::setClientVersion(u32 messagePointer) {
+	u32 version = mem.read32(messagePointer + 4);
+	log("AC::SetClientVersion (version = %d)\n", version);
+
+	mem.write32(messagePointer + 4, Result::Success);
+}
\ No newline at end of file
diff --git a/src/core/services/service_manager.cpp b/src/core/services/service_manager.cpp
index d27e6ce1..b3ebe6e6 100644
--- a/src/core/services/service_manager.cpp
+++ b/src/core/services/service_manager.cpp
@@ -2,12 +2,13 @@
 #include "kernel.hpp"
 
 ServiceManager::ServiceManager(std::array<u32, 16>& regs, Memory& mem, GPU& gpu, u32& currentPID, Kernel& kernel)
-	: regs(regs), mem(mem), kernel(kernel), apt(mem, kernel), cecd(mem), cfg(mem), dsp(mem), hid(mem), 
+	: regs(regs), mem(mem), kernel(kernel), ac(mem), apt(mem, kernel), cecd(mem), cfg(mem), dsp(mem), hid(mem), 
 	fs(mem, kernel), gsp_gpu(mem, gpu, currentPID), gsp_lcd(mem), mic(mem), ndm(mem), ptm(mem) {}
 
 static constexpr int MAX_NOTIFICATION_COUNT = 16;
 
 void ServiceManager::reset() {
+    ac.reset();
 	apt.reset();
 	cecd.reset();
 	cfg.reset();
@@ -79,7 +80,9 @@ void ServiceManager::getServiceHandle(u32 messagePointer) {
 	std::string service = mem.readString(messagePointer + 4, 8);
 	log("srv::getServiceHandle (Service: %s, nameLength: %d, flags: %d)\n", service.c_str(), nameLength, flags);
 
-	if (service == "APT:S") { // TODO: APT:A, APT:S and APT:U are slightly different
+	if (service == "ac:u") {
+        handle = KernelHandles::AC;
+    } else if (service == "APT:S") { // TODO: APT:A, APT:S and APT:U are slightly different
 		handle = KernelHandles::APT;
 	} else if (service == "APT:A") {
 		handle = KernelHandles::APT;
@@ -136,6 +139,7 @@ void ServiceManager::receiveNotification(u32 messagePointer) {
 
 void ServiceManager::sendCommandToService(u32 messagePointer, Handle handle) {
 	switch (handle) {
+        case KernelHandles::AC: ac.handleSyncRequest(messagePointer); break;
 		case KernelHandles::APT: apt.handleSyncRequest(messagePointer); break;
 		case KernelHandles::CECD: cecd.handleSyncRequest(messagePointer); break;
 		case KernelHandles::CFG: cfg.handleSyncRequest(messagePointer); break;