diff --git a/client/ScreenManager.cpp b/client/ScreenManager.cpp
index e6ff6d8..7b7c939 100644
--- a/client/ScreenManager.cpp
+++ b/client/ScreenManager.cpp
@@ -457,7 +457,7 @@ VOID CScreenManager::OnReceive(PBYTE szBuffer, ULONG ulLength)
             SendData(szBuffer, sizeof(szBuffer));
             break;
         }
-        SendClientClipboard();
+        SendClientClipboard(ulLength > 1);
         break;
     }
     case COMMAND_SCREEN_SET_CLIPBOARD: {
@@ -531,26 +531,48 @@ VOID CScreenManager::UpdateClientClipboard(char *szBuffer, ULONG ulLength)
     CloseClipboard();
 }
 
-VOID CScreenManager::SendClientClipboard()
+VOID CScreenManager::SendClientClipboard(BOOL fast)
 {
-    if (!::OpenClipboard(NULL))  //打开剪切板设备
-        return;
-    HGLOBAL hGlobal = GetClipboardData(CF_TEXT);   //代表着一个内存
-    if (hGlobal == NULL) {
-        ::CloseClipboard();
-        return;
-    }
-    size_t	  iPacketLength = GlobalSize(hGlobal) + 1;
-    char*   szClipboardVirtualAddress = (LPSTR) GlobalLock(hGlobal); //锁定
-    LPBYTE	szBuffer = new BYTE[iPacketLength];
+	if (!::OpenClipboard(NULL))
+		return;
 
+	// 改为获取 Unicode 格式
+	HGLOBAL hGlobal = GetClipboardData(CF_UNICODETEXT);
+	if (hGlobal == NULL) {
+		::CloseClipboard();
+		return;
+	}
 
-    szBuffer[0] = TOKEN_CLIPBOARD_TEXT;
-    memcpy(szBuffer + 1, szClipboardVirtualAddress, iPacketLength - 1);
-    ::GlobalUnlock(hGlobal);
-    ::CloseClipboard();
-    m_ClientObject->Send2Server((char*)szBuffer, iPacketLength);
-    delete[] szBuffer;
+	wchar_t* pWideStr = (wchar_t*)GlobalLock(hGlobal);
+	if (pWideStr == NULL) {
+		::CloseClipboard();
+		return;
+	}
+
+	// Unicode 转 UTF-8
+	int utf8Len = WideCharToMultiByte(CP_UTF8, 0, pWideStr, -1, NULL, 0, NULL, NULL);
+	if (utf8Len <= 0) {
+		GlobalUnlock(hGlobal);
+		::CloseClipboard();
+		return;
+	}
+
+	if (fast && utf8Len > 200 * 1024) {
+		Mprintf("剪切板文本太长, 无法快速拷贝: %d\n", utf8Len);
+		GlobalUnlock(hGlobal);
+		::CloseClipboard();
+		return;
+	}
+
+	LPBYTE szBuffer = new BYTE[utf8Len + 1];
+	szBuffer[0] = TOKEN_CLIPBOARD_TEXT;
+	WideCharToMultiByte(CP_UTF8, 0, pWideStr, -1, (char*)(szBuffer + 1), utf8Len, NULL, NULL);
+
+	GlobalUnlock(hGlobal);
+	::CloseClipboard();
+
+	m_ClientObject->Send2Server((char*)szBuffer, utf8Len + 1);
+	delete[] szBuffer;
 }
 
 
diff --git a/client/ScreenManager.h b/client/ScreenManager.h
index 0ed79ec..1bccf67 100644
--- a/client/ScreenManager.h
+++ b/client/ScreenManager.h
@@ -46,7 +46,7 @@ public:
     std::string m_DesktopID;
     BOOL  m_bIsWorking;
     BOOL  m_bIsBlockInput;
-    VOID SendClientClipboard();
+    VOID SendClientClipboard(BOOL fast);
     VOID UpdateClientClipboard(char *szBuffer, ULONG ulLength);
 
     std::string m_hash;
diff --git a/lib/FileUpload_Libx64.lib b/lib/FileUpload_Libx64.lib
index dee75b0..f137a00 100644
Binary files a/lib/FileUpload_Libx64.lib and b/lib/FileUpload_Libx64.lib differ
diff --git a/lib/FileUpload_Libx64d.lib b/lib/FileUpload_Libx64d.lib
index 9f3ecd3..cf6fbcb 100644
Binary files a/lib/FileUpload_Libx64d.lib and b/lib/FileUpload_Libx64d.lib differ
diff --git a/server/2015Remote/2015Remote.cpp b/server/2015Remote/2015Remote.cpp
index 5ee1bdc..a66728d 100644
--- a/server/2015Remote/2015Remote.cpp
+++ b/server/2015Remote/2015Remote.cpp
@@ -134,21 +134,21 @@ static BOOL HandleServiceCommandLine()
     // -service: 作为服务运行
     if (cmdLine.Find(_T("-service")) != -1) {
         int r = ServerService_Run();
-        Mprintf("[HandleServiceCommandLine] ServerService_Run %s", r ? "failed" : "succeed");
+        Mprintf("[HandleServiceCommandLine] ServerService_Run %s\n", r ? "failed" : "succeed");
         return TRUE;
     }
 
     // -install: 安装服务
     if (cmdLine.Find(_T("-install")) != -1) {
         BOOL r = ServerService_Install();
-        Mprintf("[HandleServiceCommandLine] ServerService_Install %s", !r ? "failed" : "succeed");
+        Mprintf("[HandleServiceCommandLine] ServerService_Install %s\n", !r ? "failed" : "succeed");
         return TRUE;
     }
 
     // -uninstall: 卸载服务
     if (cmdLine.Find(_T("-uninstall")) != -1) {
         BOOL r = ServerService_Uninstall();
-        Mprintf("[HandleServiceCommandLine] ServerService_Uninstall %s", !r ? "failed" : "succeed");
+        Mprintf("[HandleServiceCommandLine] ServerService_Uninstall %s\n", !r ? "failed" : "succeed");
         return TRUE;
     }
 
@@ -156,7 +156,7 @@ static BOOL HandleServiceCommandLine()
     // 此模式下正常运行GUI，但使用不同的互斥量名称避免冲突
     if (cmdLine.Find(_T("-agent")) != -1) {
         // 继续正常启动GUI，但标记为代理模式
-        Mprintf("[HandleServiceCommandLine] Run service agent: '%s'", cmdLine.GetString());
+        Mprintf("[HandleServiceCommandLine] Run service agent: '%s'\n", cmdLine.GetString());
         return FALSE;
     }
 
@@ -165,7 +165,7 @@ static BOOL HandleServiceCommandLine()
     BOOL running = FALSE;
     char servicePath[MAX_PATH] = { 0 };
     BOOL r = ServerService_CheckStatus(&registered, &running, servicePath, MAX_PATH);
-    Mprintf("[HandleServiceCommandLine] ServerService_CheckStatus %s", !r ? "failed" : "succeed");
+    Mprintf("[HandleServiceCommandLine] ServerService_CheckStatus %s\n", !r ? "failed" : "succeed");
 
     char curPath[MAX_PATH];
     GetModuleFileNameA(NULL, curPath, MAX_PATH);
@@ -242,13 +242,13 @@ BOOL CMy2015RemoteApp::InitInstance()
 	char curFile[MAX_PATH] = { 0 };
 	GetModuleFileNameA(NULL, curFile, MAX_PATH);
     if (!IsRunningAsAdmin() && LaunchAsAdmin(curFile, "runas")) {
-        Mprintf("[InitInstance] 程序没有管理员权限，用户选择以管理员身份重新运行。");
+        Mprintf("[InitInstance] 程序没有管理员权限，用户选择以管理员身份重新运行。\n");
         return FALSE;
     }
 
     // 首先处理服务命令行参数
     if (HandleServiceCommandLine()) {
-        Mprintf("[InitInstance] 服务命令已处理，退出。");
+        Mprintf("[InitInstance] 服务命令已处理，退出。\n");
         return FALSE;  // 服务命令已处理，退出
     }
 
@@ -268,7 +268,7 @@ BOOL CMy2015RemoteApp::InitInstance()
     }
 #endif
 
-    Mprintf("[InitInstance] 主控程序启动运行。");
+    Mprintf("[InitInstance] 主控程序启动运行。\n");
     SetUnhandledExceptionFilter(&whenbuged);
 
     // 创建并显示启动画面
@@ -349,10 +349,11 @@ int CMy2015RemoteApp::ExitInstance()
     // 只有在代理模式退出时才停止服务
     if (IsAgentMode()) {
         ServerService_Stop();
-        Mprintf("[InitInstance] 主控程序为代理模式，停止服务。");
+        Mprintf("[InitInstance] 主控程序为代理模式，停止服务。\n");
     }
 
-    Mprintf("[InitInstance] 主控程序退出运行。");
+    Mprintf("[InitInstance] 主控程序退出运行。\n");
+    Sleep(1000);
 
     return CWinApp::ExitInstance();
 }
diff --git a/server/2015Remote/2015RemoteDlg.cpp b/server/2015Remote/2015RemoteDlg.cpp
index 819dbaa..e89e6ae 100644
--- a/server/2015Remote/2015RemoteDlg.cpp
+++ b/server/2015Remote/2015RemoteDlg.cpp
@@ -3809,53 +3809,56 @@ void CMy2015RemoteDlg::OnDestroy()
 
 CString GetClipboardText()
 {
-    if (!OpenClipboard(nullptr)) return _T("");
+	if (!OpenClipboard(nullptr)) return _T("");
 
+	CString strText;
+
+	// 优先获取 Unicode 格式
+	HANDLE hData = GetClipboardData(CF_UNICODETEXT);
+	if (hData) {
+		wchar_t* pszText = static_cast<wchar_t*>(GlobalLock(hData));
+		if (pszText) {
 #ifdef UNICODE
-    HANDLE hData = GetClipboardData(CF_UNICODETEXT);
+			strText = pszText;
 #else
-    HANDLE hData = GetClipboardData(CF_TEXT);
+			// 将 Unicode 转换为多字节（使用系统默认代码页）
+			int len = WideCharToMultiByte(CP_ACP, 0, pszText, -1, nullptr, 0, nullptr, nullptr);
+			if (len > 0) {
+				char* pBuf = strText.GetBuffer(len);
+				WideCharToMultiByte(CP_ACP, 0, pszText, -1, pBuf, len, nullptr, nullptr);
+				strText.ReleaseBuffer();
+			}
 #endif
+		}
+		GlobalUnlock(hData);
+	}
 
-    if (!hData) {
-        CloseClipboard();
-        return _T("");
-    }
-
-#ifdef UNICODE
-    wchar_t* pszText = static_cast<wchar_t*>(GlobalLock(hData));
-#else
-    char* pszText = static_cast<char*>(GlobalLock(hData));
-#endif
-
-    CString strText = pszText ? pszText : _T("");
-    GlobalUnlock(hData);
-    CloseClipboard();
-    return strText;
+	CloseClipboard();
+	return strText;
 }
 
-void SetClipboardText(const CString& text)
+void SetClipboardText(const char* utf8Text)
 {
-    if (!OpenClipboard(nullptr)) return;
-    EmptyClipboard();
+	if (!OpenClipboard(nullptr)) return;
+	EmptyClipboard();
 
-#ifdef UNICODE
-    HGLOBAL hGlob = GlobalAlloc(GMEM_MOVEABLE, (text.GetLength() + 1) * sizeof(wchar_t));
-    wchar_t* p = static_cast<wchar_t*>(GlobalLock(hGlob));
-    if (p) wcscpy_s(p, text.GetLength() + 1, text);
-#else
-    HGLOBAL hGlob = GlobalAlloc(GMEM_MOVEABLE, (text.GetLength() + 1) * sizeof(char));
-    char* p = static_cast<char*>(GlobalLock(hGlob));
-    if (p) strcpy_s(p, text.GetLength() + 1, CT2A(text)); // CT2A 宏把 CString 转成 char*
-#endif
-
-    GlobalUnlock(hGlob);
-#ifdef UNICODE
-    SetClipboardData(CF_UNICODETEXT, hGlob);
-#else
-    SetClipboardData(CF_TEXT, hGlob);
-#endif
-    CloseClipboard();
+	// UTF-8 转 Unicode
+	int wlen = MultiByteToWideChar(CP_UTF8, 0, utf8Text, -1, nullptr, 0);
+	if (wlen > 0) {
+		HGLOBAL hGlob = GlobalAlloc(GMEM_MOVEABLE, wlen * sizeof(wchar_t));
+		if (hGlob) {
+			wchar_t* p = static_cast<wchar_t*>(GlobalLock(hGlob));
+			if (p) {
+				MultiByteToWideChar(CP_UTF8, 0, utf8Text, -1, p, wlen);
+				GlobalUnlock(hGlob);
+				SetClipboardData(CF_UNICODETEXT, hGlob);
+			}
+			else {
+				GlobalFree(hGlob);
+			}
+		}
+	}
+	CloseClipboard();
 }
 
 CDialogBase* CMy2015RemoteDlg::GetRemoteWindow(HWND hWnd)
@@ -3919,10 +3922,15 @@ LRESULT CALLBACK CMy2015RemoteDlg::LowLevelKeyboardProc(int nCode, WPARAM wParam
                         } else {
                             CString strText = GetClipboardText();
                             if (!strText.IsEmpty()) {
+                                if (strText.GetLength() > 200*1024) {
+                                    Mprintf("【Ctrl+V】 从本地拷贝文本到远程失败, 文本太长: %d \n", strText.GetLength());
+                                    break;
+                                }
                                 BYTE* szBuffer = new BYTE[strText.GetLength() + 1];
                                 szBuffer[0] = COMMAND_SCREEN_SET_CLIPBOARD;
                                 memcpy(szBuffer + 1, strText.GetString(), strText.GetLength());
-                                dlg->m_ContextObject->Send2Client(szBuffer, strText.GetLength() + 1);
+                                if (dlg->m_ContextObject->Send2Client(szBuffer, strText.GetLength() + 1))
+                                    Sleep(100);
                                 Mprintf("【Ctrl+V】 从本地拷贝文本到远程 \n");
                                 SAFE_DELETE_ARRAY(szBuffer);
                             }
@@ -3945,7 +3953,8 @@ LRESULT CALLBACK CMy2015RemoteDlg::LowLevelKeyboardProc(int nCode, WPARAM wParam
                             EmptyClipboard();
                             CloseClipboard();
                         }
-                        g_2015RemoteDlg->m_pActiveSession->m_ContextObject->Send2Client(bToken, sizeof(bToken));
+                        if (g_2015RemoteDlg->m_pActiveSession->m_ContextObject->Send2Client(bToken, sizeof(bToken)))
+                            Sleep(200);
                         Mprintf("【Ctrl+V】 从远程拷贝到本地 \n");
                     } else {
                         Mprintf("[Ctrl+V] 没有活动的远程桌面会话 \n");
diff --git a/server/2015Remote/IOCPServer.cpp b/server/2015Remote/IOCPServer.cpp
index 6abf704..aea0e29 100644
--- a/server/2015Remote/IOCPServer.cpp
+++ b/server/2015Remote/IOCPServer.cpp
@@ -605,7 +605,7 @@ BOOL IOCPServer::OnClientPostSending(CONTEXT_OBJECT* ContextObject,ULONG ulCompl
             int iOk = WSASend(ContextObject->sClientSocket, &ContextObject->wsaOutBuffer,1,
                               NULL, ulFlags,&OverlappedPlus->m_ol, NULL);
             if ( iOk == SOCKET_ERROR && WSAGetLastError() != WSA_IO_PENDING ) {
-                int a = GetLastError();
+                int a = WSAGetLastError();
                 Mprintf("!!! OnClientPostSending 投递消息失败: %d\n", a);
                 RemoveStaleContext(ContextObject);
                 SAFE_DELETE(OverlappedPlus);
diff --git a/server/2015Remote/ScreenSpyDlg.cpp b/server/2015Remote/ScreenSpyDlg.cpp
index 66569b8..5f36056 100644
--- a/server/2015Remote/ScreenSpyDlg.cpp
+++ b/server/2015Remote/ScreenSpyDlg.cpp
@@ -797,22 +797,36 @@ BOOL CScreenSpyDlg::SaveSnapshot(void)
 }
 
 
-VOID CScreenSpyDlg::UpdateServerClipboard(char *szBuffer,ULONG ulLength)
+VOID CScreenSpyDlg::UpdateServerClipboard(char* szBuffer, ULONG ulLength)
 {
-    if (!::OpenClipboard(NULL))
-        return;
+	if (!::OpenClipboard(NULL))
+		return;
 
-    ::EmptyClipboard();
-    HGLOBAL hGlobal = GlobalAlloc(GPTR, ulLength);
-    if (hGlobal != NULL) {
+	::EmptyClipboard();
 
-        char*  szClipboardVirtualAddress  = (LPTSTR) GlobalLock(hGlobal);
-        memcpy(szClipboardVirtualAddress,szBuffer,ulLength);
-        GlobalUnlock(hGlobal);
-        if(NULL==SetClipboardData(CF_TEXT, hGlobal))
-            GlobalFree(hGlobal);
-    }
-    CloseClipboard();
+	// UTF-8 转 Unicode
+	int wlen = MultiByteToWideChar(CP_UTF8, 0, szBuffer, ulLength, nullptr, 0);
+	if (wlen > 0) {
+		// 分配 Unicode 缓冲区（+1 确保 null 结尾）
+		HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, (wlen + 1) * sizeof(wchar_t));
+		if (hGlobal != NULL) {
+			wchar_t* pWideStr = (wchar_t*)GlobalLock(hGlobal);
+			if (pWideStr) {
+				MultiByteToWideChar(CP_UTF8, 0, szBuffer, ulLength, pWideStr, wlen);
+				pWideStr[wlen] = L'\0';  // 确保 null 结尾
+				GlobalUnlock(hGlobal);
+
+				if (SetClipboardData(CF_UNICODETEXT, hGlobal) == NULL) {
+					GlobalFree(hGlobal);
+				}
+			}
+			else {
+				GlobalFree(hGlobal);
+			}
+		}
+	}
+
+	CloseClipboard();
 }
 
 VOID CScreenSpyDlg::SendServerClipboard(void)