When you try to add or update an Azure Endpoint, you get this error:
Failed to update endpoint ‘EndpointName’ on virtual machine ‘ServerName’. Unable to create virtual machine ‘CSL-FTP-001’: ‘Windows Azure is currently performing an operation with x-ms-requestid RequestID on this deployment that requires exclusive access.
That’s because you’ve not given it a minute to finish creating / editing the last Endpoint you created / edited. Wait 30 seconds and try again and it should work.