Microsoft KB Archive/893005

= FIX: A Windows Forms-based application may unexpectedly quit or you may receive NullReference exceptions during run time when based application uses the ErrorProvider control or the ToolTip control in the .NET Framework 1.1 =

Article ID: 893005

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft .NET Framework 1.1
 * Microsoft .NET Framework 1.1 Service Pack 1

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SYMPTOMS
In the Microsoft .NET Framework 1.1, when a Microsoft Windows Forms-based application contains forms that contain the ErrorProvider control or the ToolTip control, the application may unexpectedly quit or you may receive NullReference exceptions during run time. Typically, this problem occurs when the application is under heavy load.



CAUSE
This problem occurs when the form that contains the ErrorProvider control or the ToolTip control is incorrectly disposed during form closing. The exception occurs when the form is re-created and appears again.



Download information
The following file is available for download from the Microsoft Download Center:

Download the 226395_ENU_i386_zip.exe package or the 228430_ENU_i386_zip.exe package now.

Release Date: 6/20/2007

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file. A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it 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 Microsoft .NET Framework service pack that contains this hotfix.

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

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites
The Microsoft .NET Framework 1.1 Service Pack 1

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.

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 tool in Control Panel.   Date         Time   Version        Size       File name --  26-Jan-2005  17:35  1.1.4322.2064  2,056,192  System.windows.forms.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, 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

Keywords: kbwinserv2003sp2fix kbhotfixserver kbqfe kbfix kbbug kbpubtypekc KB893005

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