diff --git a/dev/AppNotifications/AppNotification.cpp b/dev/AppNotifications/AppNotification.cpp
index d1a15aec90..1ef5852a4c 100644
--- a/dev/AppNotifications/AppNotification.cpp
+++ b/dev/AppNotifications/AppNotification.cpp
@@ -4,6 +4,7 @@
 #include "pch.h"
 #include "AppNotification.h"
 #include "Microsoft.Windows.AppNotifications.AppNotification.g.cpp"
+#include "AppNotificationConferencingConfig.h"
 
 using namespace winrt::Windows::Data::Xml::Dom;
 
diff --git a/dev/AppNotifications/AppNotificationBuilder/AppNotificationBuilder.cpp b/dev/AppNotifications/AppNotificationBuilder/AppNotificationBuilder.cpp
index d74afdf2e9..aadcb00623 100644
--- a/dev/AppNotifications/AppNotificationBuilder/AppNotificationBuilder.cpp
+++ b/dev/AppNotifications/AppNotificationBuilder/AppNotificationBuilder.cpp
@@ -9,6 +9,7 @@
 #include <winrt/Windows.Globalization.DateTimeFormatting.h>
 #include "Microsoft.Windows.AppNotifications.Builder.AppNotificationBuilder.g.cpp"
 #include "AppNotificationBuilderUtility.h"
+#include "AppNotificationConferencingConfig.h"
 #include <iomanip>
 #include <ctime>
 #include <sstream>
@@ -403,7 +404,7 @@ namespace winrt::Microsoft::Windows::AppNotifications::Builder::implementation
 
     winrt::Microsoft::Windows::AppNotifications::Builder::AppNotificationBuilder AppNotificationBuilder::AddCameraPreview()
     {
-        THROW_HR_IF(E_NOTIMPL, !AppNotificationConferencingConfig::IsCallingPreviewSupported());
+        THROW_HR_IF(E_NOTIMPL, !winrt::Microsoft::Windows::AppNotifications::implementation::AppNotificationConferencingConfig::IsCallingPreviewSupported());
 
         THROW_HR_IF_MSG(E_INVALIDARG, m_useCameraPreview, "CameraPreview element is already added, only one is allowed");
 
diff --git a/dev/AppNotifications/AppNotificationBuilder/AppNotificationButton.cpp b/dev/AppNotifications/AppNotificationBuilder/AppNotificationButton.cpp
index b78e592841..cd151774c4 100644
--- a/dev/AppNotifications/AppNotificationBuilder/AppNotificationButton.cpp
+++ b/dev/AppNotifications/AppNotificationBuilder/AppNotificationButton.cpp
@@ -7,6 +7,7 @@
 #include "Microsoft.Windows.AppNotifications.Builder.AppNotificationButton.g.cpp"
 #include <IsWindowsVersion.h>
 #include "AppNotificationBuilderUtility.h"
+#include "AppNotificationConferencingConfig.h"
 #include "AppNotificationBuilderTelemetry.h"
 
 namespace winrt::Microsoft::Windows::AppNotifications::Builder::implementation
@@ -138,7 +139,7 @@ namespace winrt::Microsoft::Windows::AppNotifications::Builder::implementation
 
     winrt::Microsoft::Windows::AppNotifications::Builder::AppNotificationButton AppNotificationButton::SetSettingStyle(AppNotificationButtonSettingStyle const& value)
     {
-        THROW_HR_IF(E_NOTIMPL, !AppNotificationConferencingConfig::IsCallingPreviewSupported());
+        THROW_HR_IF(E_NOTIMPL, !winrt::Microsoft::Windows::AppNotifications::implementation::AppNotificationConferencingConfig::IsCallingPreviewSupported());
 
         m_settingType = value;
         return *this;
diff --git a/dev/AppNotifications/AppNotificationConferencingConfig.cpp b/dev/AppNotifications/AppNotificationConferencingConfig.cpp
index e7e066e44b..043735f9e4 100644
--- a/dev/AppNotifications/AppNotificationConferencingConfig.cpp
+++ b/dev/AppNotifications/AppNotificationConferencingConfig.cpp
@@ -51,15 +51,3 @@ namespace winrt::Microsoft::Windows::AppNotifications::implementation
         return isSupported;
     }
 }
-
-// This function (not in the "implementation" namespace) is not defined when the feature is disabled,
-// resulting in a linker error. Define the function for that scenario.
-#if WINDOWSAPPRUNTIME_MICROSOFT_WINDOWS_CALLINGPREVIEWSUPPORT_FEATURE_CALLINGPREVIEWSUPPORT_ENABLED != 1
-namespace winrt::Microsoft::Windows::AppNotifications
-{
-    bool AppNotificationConferencingConfig::IsCallingPreviewSupported()
-    {
-        return false;
-    }
-}
-#endif
diff --git a/dev/AppNotifications/AppNotificationManager.cpp b/dev/AppNotifications/AppNotificationManager.cpp
index bcee2ddfc5..27977cca02 100644
--- a/dev/AppNotifications/AppNotificationManager.cpp
+++ b/dev/AppNotifications/AppNotificationManager.cpp
@@ -25,6 +25,7 @@
 #include <WindowsAppRuntime.SelfContained.h>
 #include <Microsoft.RoApi.h>
 #include <ShellLocalization.h>
+#include "AppNotificationConferencingConfig.h"
 #include <filesystem>
 #include <NotificationPlatformActivation.h>
 
@@ -434,7 +435,7 @@ namespace winrt::Microsoft::Windows::AppNotifications::implementation
             notification.Payload(),
             notification.Tag(),
             notification.Group(),
-            winrt::AppNotificationConferencingConfig::IsCallingPreviewSupported()) };
+            AppNotificationConferencingConfig::IsCallingPreviewSupported()) };
 
         THROW_HR_IF(WPN_E_NOTIFICATION_POSTED, notification.Id() != 0);
 
diff --git a/dev/AppNotifications/NotificationConferencingConfig.cpp b/dev/AppNotifications/NotificationConferencingConfig.cpp
index d8ef87aa00..551169dedb 100644
--- a/dev/AppNotifications/NotificationConferencingConfig.cpp
+++ b/dev/AppNotifications/NotificationConferencingConfig.cpp
@@ -26,7 +26,7 @@ STDMETHODIMP NotificationConferencingConfig::get_AudioInputDeviceId(_Out_ HSTRIN
     winrt::copy_to_abi(m_conferencingConfig.AudioInputDeviceId(), reinterpret_cast<void*&>(value));
     return S_OK;
 }
-CATCH_RETURN() 
+CATCH_RETURN()
 
 
 STDMETHODIMP NotificationConferencingConfig::get_AudioOutputDeviceId(_Out_ HSTRING* value) noexcept try
diff --git a/dev/AppNotifications/NotificationProperties.cpp b/dev/AppNotifications/NotificationProperties.cpp
index 2dfe21f253..ce969a3737 100644
--- a/dev/AppNotifications/NotificationProperties.cpp
+++ b/dev/AppNotifications/NotificationProperties.cpp
@@ -50,7 +50,7 @@ NotificationProperties::NotificationProperties(winrt::AppNotification const& toa
         m_toastProgressData = winrt::make_self<NotificationProgressData>(toastNotification.Progress());
     }
 
-    if (winrt::AppNotificationConferencingConfig::IsCallingPreviewSupported())
+    if (winrt::implementation::AppNotificationConferencingConfig::IsCallingPreviewSupported())
     {
         if (auto config = toastNotification.ConferencingConfig())
         {