You use Microsoft Visual Studio 2005, and you create an ActiveX control in an application. You call the AtlIPersistPropertyBag_Load function from the ATLCOM.h file. When you run the control, an "Access Violation" exception may occur. Additionally, the application crashes.

Symptoms

This problem occurs because the CComVariant::Clear function does not clear some members in the CComVariant object. When the destructor is called, the SysFreeString function is called if a basic string (BSTR) exists in the out-of-date members. Then, an invalid address is accessed, and this causes the access violation.

Note This behavior occurs in the AtlIPersistPropertyBag_Load function.

Cause

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have Microsoft Visual Studio 2005 Service Pack 1 (SP1) installed.

For more information about how to obtain the service pack, click the following article number to view the article in the Microsoft Knowledge Base:

929697 How to obtain the latest Visual Studio 2005 service pack

Restart information

You may have to restart the computer after you install this hotfix if the affected files are being used. We recommend that you exit any instances of Visual Studio before you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

This hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

File name

File version

File size

Date

Time

Platform

Atl80.dll

8.0.50727.6203

119,984

27-Jun-2011

04:07

x86

Atl80.dll

8.0.50727.6203

82,096

27-Jun-2011

04:08

x86

Atl80.dll

8.0.50727.6203

81,072

27-Jun-2011

04:08

x86

Atl80.dll

8.0.50727.6203

117,936

27-Jun-2011

04:08

x86

Atl80.dll

8.0.50727.6203

119,984

27-Jun-2011

04:08

x86

Atl80.dll

8.0.50727.6203

117,936

27-Jun-2011

04:08

x86

Atl80.dll

8.0.50727.6203

91,824

27-Jun-2011

04:08

x86

Atl80.dll

8.0.50727.6203

111,792

27-Jun-2011

04:08

x86

atl.lib

12,154

26-Jun-2011

22:08

x86

atl.lib

12,154

26-Jun-2011

22:08

x86

atl.lib

12,154

26-Jun-2011

22:08

x86

atl.lib

12,154

26-Jun-2011

22:08

x86

atl.lib

12,154

26-Jun-2011

22:08

x86

atl.lib

12,154

26-Jun-2011

22:08

x86

atl.lib

12,380

26-Jun-2011

22:08

x86

atl.lib

12,380

26-Jun-2011

22:08

x86

atlcom.h

175,950

26-Jun-2011

22:08

atlcomcli.h

68,740

26-Jun-2011

22:08

atlosapis.lib

124,748

26-Jun-2011

22:06

x86

atlosapis.lib

125,026

26-Jun-2011

22:06

x86

atlosapis.lib

120,830

26-Jun-2011

22:06

x86

atlosapis.lib

121,652

26-Jun-2011

22:06

x86

atlosapis.lib

124,428

26-Jun-2011

22:06

x86

atlosapis.lib

122,192

26-Jun-2011

22:06

x86

atlosapis.lib

113,022

26-Jun-2011

22:06

x86

atlosapis.lib

131,122

26-Jun-2011

22:06

x86

atls.lib

814,070

26-Jun-2011

22:08

x86

atls.lib

817,108

26-Jun-2011

22:08

x86

atls.lib

1,133,736

26-Jun-2011

22:08

x86

atls.lib

1,133,870

26-Jun-2011

22:08

x86

atls.lib

1,137,342

26-Jun-2011

22:08

x86

atls.lib

1,137,476

26-Jun-2011

22:08

x86

atls.lib

1,267,068

26-Jun-2011

22:08

x86

atls.lib

1,110,478

26-Jun-2011

22:08

x86

atlsd.lib

1,275,334

26-Jun-2011

22:08

x86

atlsd.lib

1,293,630

26-Jun-2011

22:08

x86

atlsd.lib

1,709,616

26-Jun-2011

22:08

x86

atlsd.lib

1,708,950

26-Jun-2011

22:08

x86

atlsd.lib

1,718,824

26-Jun-2011

22:08

x86

atlsd.lib

1,717,314

26-Jun-2011

22:08

x86

atlsd.lib

1,499,144

26-Jun-2011

22:08

x86

atlsd.lib

1,288,248

26-Jun-2011

22:08

x86


Resolution

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Status

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

More Information

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