This service uses HTTPS to *.do.dsp.mp. (communication to this service has to be allowed outbound to the Internet even if only local sharing is enabled). Phil Wilcock Optimization contacts a cloud service for a list of peers. For LAN peers Delivery Optimization won’t try Teredo.Īs far as payloads go - you need to allow access to these locations. But if it’s not available it will still try 7680. Delivery Optimization always tries to use Teredo, on IPv4 too, but only when Delivery Optimization Some network people really don’t like Teredo, and you don't have to use it, so long as you open port 7680 (TCP & UDP) and then Teredo can be disabled. Port 3544 is a Teredo port that Delivery Optimization is using for NAT traversal to connect to Internet peers. This can help you get updates and apps more quickly if you have a limited or unreliable Internet connection. It then leverages port 7680 to listen for incoming connections from peers. Windows Update Delivery Optimization enables you to download Windows updates and Windows Store apps from sources other than Microsoft.

Delivery Optimization contacts a cloud service for a list of peers.

Delivery optimization