diff --git a/scripts/wk/cfg/setup.py b/scripts/wk/cfg/setup.py
index 54d5ca8d..86ba87ef 100644
--- a/scripts/wk/cfg/setup.py
+++ b/scripts/wk/cfg/setup.py
@@ -11,6 +11,11 @@ BROWSER_PATHS = {
   'Opera': 'Opera/launcher.exe',
   }
 FAB_TIMEFRAME = 14 # If it's been at least this many days don't prompt for an AV scan
+DISABLED_ENTRIES_WINDOWS_11 = {
+  # Group Name: Option Name
+  'Install Software': 'Open Shell',
+  'Configure System': 'Open Shell',
+  }
 LIBREOFFICE_XCU_DATA = '''<?xml version="1.0" encoding="UTF-8"?>
 <oor:items xmlns:oor="http://openoffice.org/2001/registry" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <item oor:path="/org.openoffice.Setup/Office/Factories/org.openoffice.Setup:Factory['com.sun.star.presentation.PresentationDocument']"><prop oor:name="ooSetupFactoryDefaultFilter" oor:op="fuse"><value>Impress MS PowerPoint 2007 XML</value></prop></item>
diff --git a/scripts/wk/os/win.py b/scripts/wk/os/win.py
index a7fa6118..16658501 100644
--- a/scripts/wk/os/win.py
+++ b/scripts/wk/os/win.py
@@ -68,14 +68,24 @@ KNOWN_HIVE_NAMES = {
   winreg.HKEY_LOCAL_MACHINE: 'HKLM',
   winreg.HKEY_USERS: 'HKU',
   }
-OS_VERSION = platform.win32_ver()[0]
-OS_VERSION = 8.1 if OS_VERSION == '8.1' else int(OS_VERSION)
 RAM_OK      = 5.5 * 1024**3 # ~6 GiB assuming a bit of shared memory
 RAM_WARNING = 3.5 * 1024**3 # ~4 GiB assuming a bit of shared memory
 REG_MSISERVER = r'HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MSIServer'
 SLMGR = pathlib.Path(f'{os.environ.get("SYSTEMROOT")}/System32/slmgr.vbs')
 SYSTEMDRIVE = os.environ.get('SYSTEMDRIVE')
 
+# STATIC OS VARIABLES
+WIN32_VER = platform.win32_ver()
+OS_BUILD_VERSION_FULL = WIN32_VER[1]
+OS_BUILD_VERSION = int(OS_BUILD_VERSION_FULL.split('.')[2])
+PLATFORM_VER = WIN32_VER[0]
+if PLATFORM_VER == '8.1':
+  OS_VERSION = 8.1
+elif OS_BUILD_VERSION >= 22000:
+  OS_VERSION = 11
+else:
+  OS_VERSION = int(PLATFORM_VER)
+
 
 # Activation Functions
 def activate_with_bios():
@@ -267,21 +277,19 @@ def get_os_name(as_list=False, check=True):
         outdated or unsupported.
   """
   key = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion'
-  build_version = int(reg_read_value("HKLM", key, "CurrentBuild"))
-  build_version_full = platform.win32_ver()[1]
-  details = WINDOWS_BUILDS.get(build_version_full, f'Build {build_version}')
+  details = WINDOWS_BUILDS.get(OS_BUILD_VERSION_FULL, f'Build {OS_BUILD_VERSION}')
   display_name = (
     f'{reg_read_value("HKLM", key, "ProductName")} {ARCH}-bit {details}'
     )
-  if build_version >= 22000:
+  if OS_BUILD_VERSION >= 22000:
     display_name = display_name.replace('Windows 10', 'Windows 11')
 
   # Check for support issues
   if check:
-    if build_version in OUTDATED_BUILD_NUMBERS:
+    if OS_BUILD_VERSION in OUTDATED_BUILD_NUMBERS:
       raise GenericWarning(f'{display_name} (outdated)')
 
-    if build_version < OLDEST_SUPPORTED_BUILD:
+    if OS_BUILD_VERSION < OLDEST_SUPPORTED_BUILD:
       raise GenericError(f'{display_name} (unsupported)')
 
   # Done
diff --git a/scripts/wk/setup/win.py b/scripts/wk/setup/win.py
index 02574707..5b89291a 100644
--- a/scripts/wk/setup/win.py
+++ b/scripts/wk/setup/win.py
@@ -14,13 +14,14 @@ import webbrowser
 from wk.cfg.main      import KIT_NAME_FULL
 from wk.cfg.setup     import (
   BROWSER_PATHS,
+  DISABLED_ENTRIES_WINDOWS_11,
   FAB_TIMEFRAME,
-  REG_ESET_NOD32_SETTINGS,
   LIBREOFFICE_XCU_DATA,
   REG_CHROME_UBLOCK_ORIGIN,
-  REG_WINDOWS_EXPLORER,
-  REG_OPEN_SHELL_SETTINGS,
+  REG_ESET_NOD32_SETTINGS,
   REG_OPEN_SHELL_LOW_POWER_IDLE,
+  REG_OPEN_SHELL_SETTINGS,
+  REG_WINDOWS_EXPLORER,
   UBLOCK_ORIGIN_URLS,
   )
 from wk.exe           import kill_procs, run_program, popen_program
@@ -167,6 +168,11 @@ def build_menus(base_menus, title, presets):
   MENU_PRESETS.add_action('Quit')
   MENU_PRESETS.update()
 
+  # Disable entries incompatible with Windows 11
+  if OS_VERSION == 11:
+    for group_name, entry_name in DISABLED_ENTRIES_WINDOWS_11.items():
+      menus[group_name].options[entry_name]['Disabled'] = True
+
   # Done
   return menus