Vienna Ensemble Pro 7 incorporates the first all-in-one MIDI and audio LAN solution that works universally on Macs and PCs. You need a working Gigabit connection and at least one iLok License, and neither audio nor MIDI Interface is needed on your networked computer!

In a nutshell:

  • 1 computer setup: iLok Cloud or iLok key.
  • 2 computer setup with 2 VE Pro servers: You will need at least one iLok key.

You can easily load your previously saved Vienna Ensemble (Pro) templates, and you can even merge existing Vienna Ensemble (Pro) projects!

You should use static IP addresses, and avoid 169.x.x.x addresses (these are automatically assigned by your computer and tend to change).

A classical stable setup may look like this: Manually assign one of these IP addresses to the computers in your setup: 192.168.0.x or 10.0.0.x, and assign a subnet-mask of If you are working with a router, you should add the IP address of the router (e.g.,


To use the Vienna Ensemble Pro Server, Bonjour Service must run properly. Otherwise, server discovery will stop working.

Mac Firewall

If you experience problems with the connection to VE Pro Server, please try and deactivate the MacOS Firewall to see wether this resolves the problem.

Unfortunately, the built-in Apple Firewall only allows exceptions on an application basis, not for individual ports. VE Pro uses multiple ports for operation, therefore the Apple Firewall will always throw this message unless it is deactivated altogether. The functionality of Vienna Ensemble Pro is not affected if you click "Allow".

Mac Firewall

Also, network utilities such as Little Snitch, various Parental Control applications and some Audio plug-ins (f.i. some 2cAudio plug-ins) are known to sometimes interfere with VE Pro connectivity.

Windows Firewall

On Windows computers with activated firewall, make sure that these ports are open:

  • 6472 (TCP)
  • 6473 (TCP)
  • 6474 (UDP)
  • 6475 (UDP)
  • 6476 (UDP)
  • 6477 (UDP)
  1. Click "Start" and type "fire" in the search window

  2. choose "Firewall with Advanced Security"

  3. Click "Inbound Rules" in the upper left corner of the window

Windows Firewall

  1. Click "New Rule".

  2. Choose "Port", then "TCP" in the next window, and enter the ports.

New Firewall Rule 1 New Firewall Rule 2

  1. Do the same for the UDP ports.

New Firewall Rule 3 New Firewall Rule 4

  1. Save the profile and Rule Name:

New Firewall Rule 5 New Firewall Rule 6 New Firewall Rule 7