diff --git a/CLIENT_AGENT_V2_INSTALLER.md b/CLIENT_AGENT_V2_INSTALLER.md
index 1e038ca..0283172 100644
--- a/CLIENT_AGENT_V2_INSTALLER.md
+++ b/CLIENT_AGENT_V2_INSTALLER.md
@@ -47,6 +47,12 @@ build_client_agent_v2_installer_windows.bat
 dist\Inv_web_Client_Setup.exe
 ```
 
+При сборке клиент формируется в формате `onedir` и целиком включается в Inno
+Setup. Это исключает распаковку Tcl/Tk во временный каталог `_MEI...` при запуске.
+Сценарий сборки отдельно проверяет наличие `_tcl_data\init.tcl` и
+`_tk_data\tk.tcl`, а затем запускает клиент с `--help` как smoke-тест. Поэтому
+установщик не будет создан с неполным или не запускающимся Tkinter.
+
 Для тихой установки и настройки службы RustDesk мастер запрашивает права
 администратора. Клиент устанавливается в каталог:
 
diff --git a/build_client_agent_v2_installer_windows.bat b/build_client_agent_v2_installer_windows.bat
index 4bf9ff7..6b4af5d 100644
--- a/build_client_agent_v2_installer_windows.bat
+++ b/build_client_agent_v2_installer_windows.bat
@@ -3,7 +3,8 @@ setlocal
 
 cd /d "%~dp0"
 set "SPEC_FILE=client_agent_v2_windows_onefile.spec"
-set "CLIENT_EXE=dist\Inv_web Client.exe"
+set "CLIENT_DIR=dist\Inv_web Client"
+set "CLIENT_EXE=%CLIENT_DIR%\Inv_web Client.exe"
 set "INSTALLER_SCRIPT=client_agent_v2_installer.iss"
 set "RUSTDESK_INSTALLER=installer\prerequisites\rustdesk.exe"
 set "ISCC=%ProgramFiles(x86)%\Inno Setup 6\ISCC.exe"
@@ -55,9 +56,33 @@ if not exist "%ISCC%" (
 
 echo Inno Setup compiler: %ISCC%
 echo Installing Python build dependencies...
-py -m pip install --upgrade pyinstaller pystray pillow
+py -m pip install --upgrade "pyinstaller>=6.18" pystray pillow
 if errorlevel 1 exit /b 1
 
+set "PYTHON_BASE="
+for /f "delims=" %%I in ('py -c "import sys; print(sys.base_prefix)"') do set "PYTHON_BASE=%%I"
+if not defined PYTHON_BASE (
+  echo Could not determine the Python installation directory.
+  exit /b 1
+)
+
+set "TCL_LIBRARY="
+for /d %%D in ("%PYTHON_BASE%\tcl\tcl*") do if exist "%%~fD\init.tcl" set "TCL_LIBRARY=%%~fD"
+set "TK_LIBRARY="
+for /d %%D in ("%PYTHON_BASE%\tcl\tk*") do if exist "%%~fD\tk.tcl" set "TK_LIBRARY=%%~fD"
+
+if not defined TCL_LIBRARY (
+  echo Tcl runtime was not found under: %PYTHON_BASE%\tcl
+  exit /b 1
+)
+if not defined TK_LIBRARY (
+  echo Tk runtime was not found under: %PYTHON_BASE%\tcl
+  exit /b 1
+)
+
+echo Tcl runtime: %TCL_LIBRARY%
+echo Tk runtime:  %TK_LIBRARY%
+
 echo Building client executable...
 py -m PyInstaller --clean --noconfirm "%SPEC_FILE%"
 if errorlevel 1 exit /b 1
@@ -67,6 +92,23 @@ if not exist "%CLIENT_EXE%" (
   exit /b 1
 )
 
+if not exist "%CLIENT_DIR%\_internal\_tcl_data\init.tcl" (
+  echo Tcl data was not included in the client build.
+  exit /b 1
+)
+
+if not exist "%CLIENT_DIR%\_internal\_tk_data\tk.tcl" (
+  echo Tk data was not included in the client build.
+  exit /b 1
+)
+
+echo Testing the packaged client runtime...
+start "" /wait "%CLIENT_EXE%" --help
+if errorlevel 1 (
+  echo The packaged client failed its startup test.
+  exit /b 1
+)
+
 echo Building Windows installer...
 "%ISCC%" "%INSTALLER_SCRIPT%"
 if errorlevel 1 exit /b 1
diff --git a/client_agent_v2_installer.iss b/client_agent_v2_installer.iss
index 52a5492..3bb4de5 100644
--- a/client_agent_v2_installer.iss
+++ b/client_agent_v2_installer.iss
@@ -31,7 +31,7 @@ DisableReadyPage=yes
 Name: "russian"; MessagesFile: "compiler:Languages\Russian.isl"
 
 [Files]
-Source: "dist\{#MyAppExeName}"; DestDir: "{app}"; Flags: ignoreversion
+Source: "dist\Inv_web Client\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
 Source: "{#RustDeskInstaller}"; DestDir: "{tmp}"; DestName: "rustdesk-installer.exe"; Flags: deleteafterinstall noencryption; Check: ShouldInstallRustDesk
 Source: "installer\configure_rustdesk.ps1"; DestDir: "{tmp}"; Flags: deleteafterinstall noencryption; Check: ShouldInstallRustDesk
 
diff --git a/client_agent_v2_windows_onefile.spec b/client_agent_v2_windows_onefile.spec
index c58e20d..38fcdd8 100644
--- a/client_agent_v2_windows_onefile.spec
+++ b/client_agent_v2_windows_onefile.spec
@@ -1,6 +1,8 @@
 # -*- mode: python ; coding: utf-8 -*-
 
 import os
+import sys
+from pathlib import Path
 
 project_root = (
     os.path.abspath(os.path.dirname(__file__))
@@ -8,15 +10,44 @@ project_root = (
     else os.path.abspath(os.getcwd())
 )
 
+
+def find_tcl_runtime_directory(environment_name, directory_prefix, marker_file):
+    configured_path = os.environ.get(environment_name)
+    if configured_path and os.path.isfile(os.path.join(configured_path, marker_file)):
+        return os.path.abspath(configured_path)
+
+    tcl_root = Path(sys.base_prefix) / "tcl"
+    for candidate in sorted(tcl_root.glob(f"{directory_prefix}*"), reverse=True):
+        if (candidate / marker_file).is_file():
+            return str(candidate.resolve())
+
+    return None
+
+
+datas = [
+    (os.path.join(project_root, "picture", "ICON", "icon_client.png"), "picture/ICON"),
+    (os.path.join(project_root, "picture", "Client", "Connect", "connected.png"), "picture/Client/Connect"),
+    (os.path.join(project_root, "picture", "Client", "Connect", "no-connection.png"), "picture/Client/Connect"),
+]
+
+if os.name == "nt":
+    tcl_library = find_tcl_runtime_directory("TCL_LIBRARY", "tcl", "init.tcl")
+    tk_library = find_tcl_runtime_directory("TK_LIBRARY", "tk", "tk.tcl")
+    if not tcl_library or not tk_library:
+        raise RuntimeError(
+            "Tcl/Tk data directories were not found. "
+            "Install Python with Tcl/Tk support or set TCL_LIBRARY and TK_LIBRARY."
+        )
+    datas.extend([
+        (tcl_library, "_tcl_data"),
+        (tk_library, "_tk_data"),
+    ])
+
 a = Analysis(
     ["client_agent_v2.py"],
     pathex=[project_root],
     binaries=[],
-    datas=[
-        (os.path.join(project_root, "picture", "ICON", "icon_client.png"), "picture/ICON"),
-        (os.path.join(project_root, "picture", "Client", "Connect", "connected.png"), "picture/Client/Connect"),
-        (os.path.join(project_root, "picture", "Client", "Connect", "no-connection.png"), "picture/Client/Connect"),
-    ],
+    datas=datas,
     hiddenimports=["pystray", "pystray._win32", "PIL.Image", "PIL.ImageTk"],
     hookspath=[],
     hooksconfig={},
@@ -32,15 +63,13 @@ pyz = PYZ(a.pure)
 exe = EXE(
     pyz,
     a.scripts,
-    a.binaries,
-    a.zipfiles,
-    a.datas,
     [],
+    exclude_binaries=True,
     name="Inv_web Client",
     debug=False,
     bootloader_ignore_signals=False,
     strip=False,
-    upx=True,
+    upx=False,
     console=False,
     disable_windowed_traceback=False,
     argv_emulation=False,
@@ -49,3 +78,13 @@ exe = EXE(
     entitlements_file=None,
     icon=os.path.join(project_root, "picture", "ICON", "icon_client.ico"),
 )
+
+coll = COLLECT(
+    exe,
+    a.binaries,
+    a.datas,
+    strip=False,
+    upx=False,
+    upx_exclude=[],
+    name="Inv_web Client",
+)