[Outlook] (module extensions) Clarify supported Outlook client (#5071)

* Clarify supported Outlook client

* Update ms.date

Author: samantharamon

docs/outlook/extension-module-outlook-add-ins.md

@@ -1,7 +1,7 @@
 ---
 title: Module extension Outlook add-ins
 description: Create applications that run inside Outlook to make it easy for your users to access business information and productivity tools without ever leaving Outlook.
-ms.date: 04/12/2024
+ms.date: 02/27/2025
 ms.localizationpriority: medium
 ---
 
@@ -10,14 +10,14 @@ ms.localizationpriority: medium
 Module extension add-ins appear in the Outlook navigation bar, right alongside mail, tasks, and calendars. A module extension isn't limited to using mail and appointment information. You can create applications that run inside Outlook to make it easy for your users to access business information and productivity tools without ever leaving Outlook.
 
 > [!TIP]
-> Instead of module extensions, create [personal tab apps that open in Outlook](/microsoftteams/platform/m365-apps/extend-m365-teams-personal-tab) to provide a more modern and convenient solution. With personal tab apps, your users will have access to business critical data and productivity tools not just in Outlook, but across Microsoft 365 applications, including Microsoft Teams, and various platforms.
+> Module extensions are only supported in classic Outlook on Windows. To provide a more modern solution that's available on various platforms, create [personal tab apps that open in Outlook](/microsoftteams/platform/m365-apps/extend-m365-teams-personal-tab) instead. With personal tab apps, your users will have access to business critical data and productivity tools not just in Outlook, but across Microsoft 365 applications, including Microsoft Teams, and various platforms.
 
 ## Supported clients and manifests
 
 To create and run module extension add-ins, you must:
 
 - Develop the add-in using an add-in only manifest. The [Unified manifest for Microsoft 365](../develop/json-manifest-overview.md) doesn't support module extensions.
-- Run the add-in in Outlook 2016 or later on Windows.
+- Run the add-in in classic Outlook on Windows (Outlook 2016 or later).
 
 ## Open a module extension
 
@@ -75,7 +75,6 @@ The following is a section of a manifest file that defines a module extension.
               <CustomTab id="idTab">
                 <Group id="idGroup">
                   <Label resid="residGroupLabel"/>
-                  <!-- Adds the module extension to the Outlook navigation bar. -->
                   <Control xsi:type="Button" id="group.changeToAssociate">
                     <Label resid="residChangeToAssociateLabel"/>
                     <Supertip>