FIX: You may encounter a System.NullReferenceException exception when you call a COM interface method in the .NET Framework 2.0

This article has been archived. It is offered "as is" and will no longer be updated.
In the Microsoft .NET Framework 2.0, you may encounter a System.NullReferenceException exception when you call a Component Object Model (COM) interface method that uses a SAFEARRAY(BSTR)* parameter.

Note This problem does not occur in the Microsoft .NET Framework 1.1 or in the Microsoft .NET Framework 1.0.

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next .NET Framework 2.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: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 usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


You must have the .NET Framework 2.0 installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
File nameFile versionFile sizeDateTimePlatform
Normidna.nlpNot applicable59,34223-Aug-200619:04Not applicable
Normnfc.nlpNot applicable45,79423-Aug-200619:04Not applicable
Normnfd.nlpNot applicable39,28423-Aug-200619:04Not applicable
Normnfkc.nlpNot applicable66,38423-Aug-200619:04Not applicable
Normnfkd.nlpNot applicable60,29423-Aug-200619:04Not applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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

Article ID: 923781 - Last Review: 01/17/2015 15:51:52 - Revision: 2.0

Microsoft .NET Framework 2.0

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