An Access Violation Occurs in Quartz.dll If You Use Multiple Video Adapters (309670)


The information in this article applies to:

  • Microsoft DirectX Software Development Kit 8.0
  • Microsoft NetMeeting 3.01 for Windows NT 4.0
  • Microsoft NetMeeting 3.01 for Windows 2000
This article was previously published under Q309670

SYMPTOMS

If your computer has more than one video adapter, an access violation may occur in Quartz.dll when the adapters are stopped.

CAUSE

NetMeeting was not designed for multiple video adapters. This problem occurs with DirectX and DirectShow 8.1-based programs that have two capture filters.

RESOLUTION

Microsoft Windows 2000

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later: 
   Date         Time   Version    Size     File name
   -------------------------------------------------
   14-Jan-2002  11:51  6.1.9.728  166,672  Qcap.dll

Microsoft Windows NT 4.0

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next DirectX and DirectShow service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later: 
   Date         Time   Version     Size     File name
   --------------------------------------------------
   10-Oct-2001  15:10  6.0.3.1030  186,448  Qcap.dll

WORKAROUND

To work around this problem, stop the video adapters in the order in which they were started.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.
Modification Type:MinorLast Reviewed:10/6/2005
Keywords:kbHotfixServer kbQFE kbbug kbfix kbOSWin2000fix kbWin2000sp3fix KB309670
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