diff --git a/core/i18n.py b/core/i18n.py
index d03fc93..02f5b10 100644
--- a/core/i18n.py
+++ b/core/i18n.py
@@ -111,6 +111,7 @@ _EN = {
     "term_connecting": "Connecting to {alias}...",
     "term_connected": "Connected to {alias}",
     "term_disconnected": "Disconnected",
+    "ctx_disconnect": "Disconnect",
     "term_click_to_connect": "Double-click to connect to {alias}",
     "sftp_click_to_connect": "Double-click server to browse files",
     "term_reconnecting": "Reconnecting ({n}/{max})...",
@@ -636,6 +637,7 @@ _RU = {
     "term_connecting": "Подключение к {alias}...",
     "term_connected": "Подключено к {alias}",
     "term_disconnected": "Отключено",
+    "ctx_disconnect": "Отключиться",
     "term_click_to_connect": "Двойной клик для подключения к {alias}",
     "sftp_click_to_connect": "Двойной клик для просмотра файлов",
     "term_reconnecting": "Переподключение ({n}/{max})...",
@@ -1161,6 +1163,7 @@ _ZH = {
     "term_connecting": "正在连接 {alias}...",
     "term_connected": "已连接到 {alias}",
     "term_disconnected": "已断开",
+    "ctx_disconnect": "断开连接",
     "term_click_to_connect": "双击连接 {alias}",
     "sftp_click_to_connect": "双击服务器浏览文件",
     "term_reconnecting": "重新连接中 ({n}/{max})...",
diff --git a/core/icons.py b/core/icons.py
index 7183892..1a73aca 100644
--- a/core/icons.py
+++ b/core/icons.py
@@ -210,6 +210,7 @@ CTX_ICONS = {
     "ctx_open_browser": "browser",
     "ctx_check_status": "status_check",
     "ctx_copy_alias": "copy",
+    "ctx_disconnect": "close",
     "edit": "edit",
     "delete": "delete",
 }
diff --git a/core/session_pool.py b/core/session_pool.py
index 14c1228..262ee31 100644
--- a/core/session_pool.py
+++ b/core/session_pool.py
@@ -255,4 +255,14 @@ class SessionPool:
                 )
                 if has_active:
                     active.append(alias)
-            return active
\ No newline at end of file
+            return active
+
+    def has_active_session(self, alias: str) -> bool:
+        with self._lock:
+            sd = self._sessions.get(alias)
+            if not sd:
+                return False
+            return bool(
+                (sd.shell_session and sd.shell_session.connected) or
+                (sd.sftp_session and sd.sftp_session.connected)
+            )
\ No newline at end of file
diff --git a/gui/app.py b/gui/app.py
index 550c89d..46031b1 100644
--- a/gui/app.py
+++ b/gui/app.py
@@ -163,6 +163,7 @@ class App(ctk.CTk):
         self.sidebar.open_tab_callback = self._context_open_tab
         self.sidebar.check_status_callback = self._context_check_status
         self.sidebar.open_browser_callback = self._context_open_browser
+        self.sidebar.disconnect_callback = self._on_server_disconnect
 
         # Main area
         self._main_frame = ctk.CTkFrame(self._paned, fg_color="transparent")
@@ -264,6 +265,11 @@ class App(ctk.CTk):
             widget.pack(fill="both", expand=True)
             self._tab_instances[key] = widget
 
+        # Wire disconnect callback for terminal toolbar button
+        terminal = self._tab_instances.get("terminal")
+        if terminal and hasattr(terminal, "_on_disconnect_callback"):
+            terminal._on_disconnect_callback = self._on_server_disconnect
+
         # Restore previously active tab if still available
         if restore_tab_key and restore_tab_key in self._tab_keys:
             try:
@@ -313,6 +319,14 @@ class App(ctk.CTk):
             if hasattr(widget, "connect"):
                 widget.connect()
 
+    def _on_server_disconnect(self, alias: str):
+        """Disconnect all sessions for a server."""
+        for key, widget in self._tab_instances.items():
+            if hasattr(widget, "disconnect"):
+                widget.disconnect()
+        self.session_pool.disconnect_session(alias)
+        self.after(500, self.sidebar.update_session_indicators)
+
     def _add_server(self):
         dialog = ServerDialog(self, self.store)
         self.wait_window(dialog)
diff --git a/gui/sidebar.py b/gui/sidebar.py
index 3bbbe36..445c0dc 100644
--- a/gui/sidebar.py
+++ b/gui/sidebar.py
@@ -97,6 +97,7 @@ class Sidebar(ctk.CTkFrame):
         self.open_tab_callback = None       # (alias, tab_key) → select server + switch tab
         self.check_status_callback = None   # (alias) → check single server
         self.open_browser_callback = None   # (alias) → open server URL in browser
+        self.disconnect_callback = None     # (alias) → disconnect all sessions
 
         # Subscribe to store changes
         self.store.subscribe(self._refresh_list)
@@ -467,6 +468,18 @@ class Sidebar(ctk.CTkFrame):
         if actions:
             menu.add_separator()
 
+        # Dynamic disconnect if session is active
+        if self.session_pool and self.session_pool.has_active_session(alias):
+            dc_icon = icon(CTX_ICONS.get("ctx_disconnect", ""))
+            dc_label = f"{dc_icon} {t('ctx_disconnect')}" if dc_icon else t("ctx_disconnect")
+            menu.add_command(
+                label=dc_label,
+                command=lambda a=alias: (
+                    self.disconnect_callback(a) if self.disconnect_callback else None
+                ),
+            )
+            menu.add_separator()
+
         # "Move to Group" submenu
         groups = self.store.get_groups()
         if groups:
diff --git a/gui/tabs/files_tab.py b/gui/tabs/files_tab.py
index 47e2e5a..678f556 100644
--- a/gui/tabs/files_tab.py
+++ b/gui/tabs/files_tab.py
@@ -318,6 +318,10 @@ class FilesTab(ctk.CTkFrame):
         if self._current_alias and not self._sftp:
             self._connect_sftp()
 
+    def disconnect(self):
+        """Disconnect SFTP and update UI (called by app)."""
+        self._disconnect_sftp()
+
     # ── SFTP connection ──
 
     def _connect_sftp(self):
diff --git a/gui/tabs/powershell_tab.py b/gui/tabs/powershell_tab.py
index d990774..1b53355 100644
--- a/gui/tabs/powershell_tab.py
+++ b/gui/tabs/powershell_tab.py
@@ -104,6 +104,12 @@ class PowershellTab(ctk.CTkFrame):
         if self._current_alias and not self._client:
             self._connect(self._current_alias)
 
+    def disconnect(self):
+        """Disconnect WinRM and update UI (called by app)."""
+        self._disconnect()
+        if self._current_alias:
+            self._set_status(t("term_click_to_connect").format(alias=self._current_alias), "#f59e0b")
+
     # ── Connection ───────────────────────────────────────────────────
 
     def _connect(self, alias: str):
diff --git a/gui/tabs/terminal_tab.py b/gui/tabs/terminal_tab.py
index 2877d1b..b809d7c 100644
--- a/gui/tabs/terminal_tab.py
+++ b/gui/tabs/terminal_tab.py
@@ -29,6 +29,17 @@ class TerminalTab(ctk.CTkFrame):
         # Import here to avoid circular issues
         from gui.widgets.terminal_widget import TerminalWidget
 
+        self._toolbar = ctk.CTkFrame(self, fg_color="transparent", height=32)
+        self._toolbar.pack(fill="x", padx=5, pady=(5, 0))
+        self._toolbar.pack_propagate(False)
+        self._disconnect_btn = ctk.CTkButton(
+            self._toolbar, text=t("ctx_disconnect"), width=110, height=28,
+            fg_color="#dc2626", hover_color="#b91c1c",
+            font=ctk.CTkFont(size=12), state="disabled",
+            command=self._on_disconnect_click,
+        )
+        self._disconnect_btn.pack(side="right", padx=2)
+
         self._terminal = TerminalWidget(
             self,
             send_callback=self._send_to_shell,
@@ -45,6 +56,7 @@ class TerminalTab(ctk.CTkFrame):
         # Sudo auto-password detection
         self._sudo_buffer = b""   # Buffer for detecting sudo prompts
         self._sudo_sent = False   # Prevent sending password twice for same prompt
+        self._on_disconnect_callback = None
 
     def set_server(self, alias: str | None):
         if alias == self._current_alias:
@@ -61,6 +73,7 @@ class TerminalTab(ctk.CTkFrame):
 
         self._current_alias = alias
         if alias:
+            self._disconnect_btn.configure(state="disabled")
             self._terminal.set_status(t("term_click_to_connect").format(alias=alias), "#f59e0b")
         else:
             self._terminal.reset()
@@ -71,6 +84,17 @@ class TerminalTab(ctk.CTkFrame):
         if self._current_alias and not self._session:
             self._connect()
 
+    def _on_disconnect_click(self):
+        if self._on_disconnect_callback and self._current_alias:
+            self._on_disconnect_callback(self._current_alias)
+
+    def disconnect(self):
+        """Disconnect and update UI (called by app)."""
+        self._disconnect()
+        self._disconnect_btn.configure(state="disabled")
+        if self._current_alias:
+            self._terminal.set_status(t("term_click_to_connect").format(alias=self._current_alias), "#f59e0b")
+
     def _connect(self):
         if not self._current_alias:
             return
@@ -140,6 +164,7 @@ class TerminalTab(ctk.CTkFrame):
                     # Only grab focus if terminal tab is currently visible
                     if self._terminal.winfo_ismapped():
                         self._terminal.focus_terminal()
+                    self._disconnect_btn.configure(state="normal")
                 self.after(0, _set_session)
             except Exception as e:
                 self.after(0, lambda: self._terminal.set_status(
diff --git a/releases/ServerManager-v1.9.22-win-x64.exe b/releases/ServerManager-v1.9.27-win-x64.exe
similarity index 98%
rename from releases/ServerManager-v1.9.22-win-x64.exe
rename to releases/ServerManager-v1.9.27-win-x64.exe
index e9f481f..42fc747 100644
Binary files a/releases/ServerManager-v1.9.22-win-x64.exe and b/releases/ServerManager-v1.9.27-win-x64.exe differ
diff --git a/version.py b/version.py
index a118b47..6dbd9ba 100755
--- a/version.py
+++ b/version.py
@@ -1,6 +1,6 @@
 """Version info for ServerManager."""
 
-__version__ = "1.9.26"
+__version__ = "1.9.27"
 __app_name__ = "ServerManager"
 __author__ = "aibot777"
 __description__ = "Desktop GUI for managing remote servers"