Universal Print – required URLs
A Windows endpoint that is used with Universal Print needs to have an internet connection, with access to the following internet (TCP/IP – 443) endpoints:
*.print.microsoft.com*.microsoftonline.com*.azure.com*.msftauth.netgo.microsoft.comaka.ms
Delivery Optimization
For peer-to-peer traffic, Delivery Optimization uses 7680 for TCP/IP or 3544 for NAT traversal (optionally Teredo). For client-service communication, it uses HTTP or HTTPS over port 80/443.
Delivery Optimization will help with band-wide consumption on Windows endpoints:
*.do.dsp.mp.microsoft.com*.dl.delivery.mp.microsoft.com*.emdl.ws.microsoft.com