Update backup-azure-vms-troubleshoot.md

Author: JarrettRenshaw

articles/backup/backup-azure-vms-troubleshoot.md

@@ -30,7 +30,7 @@ This section covers backup operation failure of Azure Virtual machine.
 * The **Event log** may show backup failures that are from other backup products, for example, Windows Server backup, and are not due to Azure backup. Use the following steps to determine whether the issue is with Azure Backup:
    * If there is an error with an entry **Backup** in the event source or message, check whether Azure IaaS VM Backup backups were successful, and whether a Restore Point was created with the desired snapshot type.
     * If Azure Backup is working, then the issue is likely with another backup solution.
-    * Here is an example of an event viewer error where Azure backup was working fine but "Windows Server Backup" was failing:<br>
+    * Here is an example of an event viewer error 517 where Azure backup was working fine but "Windows Server Backup" was failing:<br>
     ![Windows Server Backup failing](media/backup-azure-vms-troubleshoot/windows-server-backup-failing.png)
     * If Azure Backup is failing, then look for the corresponding Error Code in the section Common VM backup errors in this article.