Update troubleshoot-azure-files.md

Author: mepand

articles/backup/troubleshoot-azure-files.md

@@ -20,7 +20,7 @@ This article provides troubleshooting information to address any issues you come
   >All file shares in a Storage Account can be protected only under one Recovery Services vault. You can use [this script](scripts/backup-powershell-script-find-recovery-services-vault.md) to find the recovery services vault where your storage account is registered.
 
 - Ensure that the file share isn't present in any of the unsupported Storage Accounts. You can refer to the [Support matrix for Azure file share backup](azure-file-share-support-matrix.md) to find supported Storage Accounts.
-- Check the firewall settings of storage account to ensure that the option of allowing Microsoft Azure Services to access storage account is enabled.
+- Check the firewall settings of storage account to ensure that the option of allowing trusted Microsoft Services to access storage account is enabled.
 
 ### Error in portal states discovery of storage accounts failed