Knowledge Base

NetMeeting Only Uses COM1 and COM2 for Null Modem-Based Calls

Article ID: 207203

Article Last Modified on 1/23/2007

Microsoft NetMeeting 2.11
Microsoft NetMeeting 2.1 Standard Edition
Microsoft NetMeeting 2.11
Microsoft NetMeeting 2.1 Standard Edition
Microsoft NetMeeting 2.11
Microsoft NetMeeting 2.1 Standard Edition

This article was previously published under Q207203

SYMPTOMS

When you are using NetMeeting to place and receive null modem-based calls, you cannot change the COM port to anything other than 1 or 2. When you try to do so, you may receive the following error message:

You cannot set the properties of this communication port while it is in use.

CAUSE

This problem occurs because NetMeeting can only use COM1 and COM2 to place and receive null modem-based calls.

RESOLUTION

To work around this problem, only use COM1 and COM2 to place and receive null modem-based calls.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

For additional information about related topics, click the article numbers below to view the articles in the Microsoft Knowledge Base:

176285 NetMeeting 2.1 Netmeet.txt file

220593 NetMeeting 2.11 Netmeet.txt File Contents (1 of 2)

220928 NetMeeting 2.11 Netmeet.txt File Contents (2 of 2)

Additional query words: 2.10 4.00

Keywords: kberrmsg kbprb KB207203