Article ID: 307650 - View products that this article applies to.
This article was previously published under Q307650
When users attempt to connect to a stream by using the Windows Media Player, they may experience very poor quality throughout the course of the connection. The symptoms include, but are not limited to, the following:
This may be caused by some cable or digital subscriber line (DSL) modems that use Network Address Translation (NAT). Some NAT devices do not properly forward UDP packets.
Similar behavior may be caused by personal firewall software.
To resolve this problem, make sure that UDP protocol is disabled for the Windows Media Player on the client computer. If UDP protocol is disabled, the player connects to streaming content through TCP or HTTP (if these are enabled on the Windows Media Server).
To disable the UDP protocol, follow these steps in the Windows Media Player:
For Windows Media Player version 7.0 and later:
NAT allows clients that use private addresses to access the Internet by having the NAT server use its public address or addresses on behalf of the clients. NAT devices usually assign local IP addresses in the 192.168.x.x or 10.x.x.x ranges.
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