added the note

Author: spelluru

articles/event-hubs/private-link-service.md

@@ -17,11 +17,26 @@ A private endpoint is a network interface that connects you privately and secure
 
 For more information, see [What is Azure Private Link?](../private-link/private-link-overview.md)
 
-> [!NOTE]
+> [!IMPORTANT]
 > This feature is supported only with the **dedicated** tier. For more information about the dedicated tier, see [Overview of Event Hubs Dedicated](event-hubs-dedicated-overview.md). 
 >
 > This feature is currently in **preview**. 
 
+>[!WARNING]
+> Enabling private endpoints can prevent other Azure services from interacting with Event Hubs.
+>
+> Trusted Microsoft services are not supported when Virtual Networks are implemented.
+>
+> Common Azure scenarios that don't work with Virtual Networks (note that the list is **NOT** exhaustive) -
+> - Azure Monitor (diagnostic setting)
+> - Azure Stream Analytics
+> - Integration with Azure Event Grid
+> - Azure IoT Hub Routes
+> - Azure IoT Device Explorer
+>
+> The following Microsoft services are required to be on a virtual network
+> - Azure Web Apps
+> - Azure Functions
 
 ## Add a private endpoint using Azure portal