Merge pull request #191357 from RobdeJong/patch-134

Update how-to-connect-install-custom.md

Author: PRMerger16

articles/active-directory/hybrid/how-to-connect-install-custom.md

@@ -208,7 +208,7 @@ On the next page, you can select optional features for your scenario.
 | Optional features | Description |
 | --- | --- |
 | Exchange hybrid deployment |The Exchange hybrid deployment feature allows for the coexistence of Exchange mailboxes both on-premises and in Microsoft 365. Azure AD Connect synchronizes a specific set of [attributes](reference-connect-sync-attributes-synchronized.md#exchange-hybrid-writeback) from Azure AD back into your on-premises directory. |
-| Exchange mail public folders | The Exchange mail public folders feature allows you to synchronize mail-enabled public-folder objects from your on-premises instance of Active Directory to Azure AD. |
+| Exchange mail public folders | The Exchange mail public folders feature allows you to synchronize mail-enabled public-folder objects from your on-premises instance of Active Directory to Azure AD. Note that it is not supported to sync groups that contain public folders as members, and attempting to do so will result in a synchronization error. |
 | Azure AD app and attribute filtering |By enabling Azure AD app and attribute filtering, you can tailor the set of synchronized attributes. This option adds two more configuration pages to the wizard. For more information, see [Azure AD app and attribute filtering](#azure-ad-app-and-attribute-filtering). |
 | Password hash synchronization |If you selected federation as the sign-in solution, you can enable password hash synchronization. Then you can use it as a backup option.  </br></br>If you selected pass-through authentication, you can enable this option to ensure support for legacy clients and to provide a backup.</br></br> For more information, see [Password hash synchronization](how-to-connect-password-hash-synchronization.md).|
 | Password writeback |Use this option to ensure that password changes that originate in Azure AD are written back to your on-premises directory. For more information, see [Getting started with password management](../authentication/tutorial-enable-sspr.md). |