Can't go through VPN to setup USB Printer on Airport Express with Bonjour on Windows

Hi,

My router is a Airport Express. We have a printer USB connected to it (Brother DCP 7060D).

I can print from my Macbook through WiFi. I can print from my personal Windows laptop through Bonjour and WiFi. But I can't print through my professional laptop that use a Cisco VPN connection.

I installed Bonjour Print Services and it can't find any printers.

If I connect the printer on USB, it works fine.

Could you guys help me?

Regards,

Flo