Article ID: 324214 - View products that this article applies to.
This article was previously published under Q324214
You may not be able to make phone calls or start voice or video conversations by using Microsoft Windows Messenger. For example, you may receive the following error message when you try to make a phone call:
Your network is configured such that you can not make phone calls.
This issue may occur if one of the following conditions is true:
To resolve this issue:
To help improve security over earlier versions of Windows Messenger, we have upgraded the voice technology for Windows Messenger version 4.6. We recommend that you use the phone, voice, and video features of Windows Messenger only with a firewall or NAT device that is UPnP compliant. Internet Connection Sharing and the Internet Connection Firewall (ICF)/Windows Firewall (WF) in Windows XP are UPnP compliant.
If you have any questions about whether you are behind a firewall or what type of firewall you are using, contact your ISP or your corporate helpdesk, or see the "Internet Connection Firewall Overview" Help topic or the "Windows Firewall Overview" Help topic in Windows XP Service Pack 2 (SP2).
To obtain the best results when you are using a NAT device, make sure that you have the latest version of both the firmware and the software for the device. These may be available from the manufacturer's Web site. For more information about updating your device or software, see the NAT device's documentation.
For additional help, visit the following Microsoft Web site:
http://get.live.com/messenger/overviewFor additional information about using Windows Messenger with firewalls and NAT devices, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb457090.aspxThe third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
Article ID: 324214 - Last Review: August 22, 2007 - Revision: 7.5