Microsoft Knowledge Base Article
This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved.
Terms
of Use |
Trademarks
Article ID: 889937 - Last Review: December 8, 2008 - Revision: 4.0
Users cannot receive file transfers, audio, or video behind a NAT device in Windows Messenger 5.0
SYMPTOMS
In Microsoft Office Live Communications Server 2003 and in Live Communications Server 2005 you may experience the following symptoms:
- A Microsoft Windows Messenger user, "User A," can successfully transfer files to or send audio or video to another Windows Messenger user, "User B." (This behavior occurs when no users are behind a network address translation (NAT) device)
- "User A" cannot receive file transfers, audio, or video from "User B" when any one of the users is behind a NAT device.
CAUSE
This issue occurs if one of the Windows Messenger 5.x users or one of the Live Communications Server 2005 users is behind a NAT device. In this case, the user who is behind the NAT device receives a private IP address from that device.
When "User A" starts a session, such as a file transfer session, with "User B," IP address information is sent between computers from "User A" to "User B." However, if "User A" is behind a NAT device, this IP address information is a private IP address. When "User B" tries to connect to this private IP address to send a file or to start an audio or video session, "User B" is not successful. Therefore, file transfer traffic or audio and video traffic, only travels in one direction between these two users.
MORE INFORMATION
If you have a UPnP-enabled NAT device that is configured between the Windows Messenger 5.x users or the Live Communications Server 2005 users, all the Windows Messenger features work as expected.
Note Transfers of audio, video, and data files is peer-to-peer traffic that occurs between computers that are running Windows Messenger 5.x or Live Communications Server 2005. This traffic does not pass through the Live Communications Server computer.
For more information about Windows Messenger, visit the following Microsoft Web site:
For more information about how to deploy Live Communications Server 2003, visit the following Microsoft Web site:
APPLIES TO
- Microsoft Office Live Communications Server 2005 Standard Edition
- Microsoft Office Live Communications Server 2005 Enterprise Edition
- Microsoft Office Live Communications Server 2003
- Microsoft Office Communicator 2005
- Microsoft Windows Messenger 5.0
| kbnat kbtshoot kbprb KB889937 |
Community Feedback System
Very often, it takes hours to solve a problem. Very often, you've looked high
and low, and have tried a lot of solutions. When you finally found it, chances
are, it was because someone else helped you. Here's your chance to give back.
Use our community feedback tool to let others know what worked for you and what
didn't.
Please also understand that the community feedback system is not warranted to be
correct, it's simply a system that we've built to let people try and help each
other. If something in a feedback response doesn't make sense to you, or you're
not comfortable making changes that the feedback talks about (like registry
edits), please consult a professional.
Thank you for using kbAlertz.com Feedback System.
-- Scott Cate
Be the first to leave feedback, to help others about this knowledge base
article.
(Optional) Name
(Optional)
Public URL Or Email
Comments
No
HTML -- Text Only Please