Merge pull request #284876 from ju-shim/patch-1

Update maintenance-notifications-portal.md

Author: prmerger-automator[bot]

articles/virtual-machines/maintenance-notifications-portal.md

@@ -59,6 +59,8 @@ Once you start maintenance, your virtual machine will be maintained and the main
 
 If you missed the self-service window, you will still be able to see the window when your VM will be maintained by Azure.
 
+> [!NOTE]
+> In most cases, scheduled maintenance cannot be delayed. If you need a scheduled maintenance to be delayed, contact support and Azure will make a best-effort to postpone. 
 
 ## Next steps