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Article ID: 896665 - Last Review: January 17, 2015 - Revision: 2.0

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When you make a call to the Control.Invoke method from a Microsoft Windows Forms-based application in the Microsoft .NET Framework 1.1 Service Pack 1 (SP1), the application may stop responding. Typically, this problem occurs on computers that have multiple processors. Additionally, you may experience this problem when you use the following controls in the application:
  • DateTimePicker
  • MonthCalendar
  • DomainUpDown
  • NumericUpDown


Note The following software update resolves this problem when you use the DateTimePicker control or the MonthCalendar control in the application. If you experience this problem when you use the DomainUpDown control or the NumericUpDown control, see the "Workaround" section.

A supported software update 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 software update 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 1.1 service pack that contains this software update.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the software update. For a complete list of Microsoft Product 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.


Microsoft .NET Framework 1.1 Service Pack 1 (SP1)

Restart requirement

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

Software update replacement information

This software update does not replace any other software updates.

File information

The English version of this software update 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
   03-May-2005  05:07  1.1.4322.2321  2,056,192


To work around this problem when you use the DomainUpDown control or the NumericUpDown control in the application, follow these steps:
  1. Derive a class that inherits from the DomainUpDown control from or the NumericUpDown control.
  2. Declare a new Private method. Name the method UpdateEditTextBase. To do this, use the following code.
    private void UpdateEditTextBase()
  3. Override the UpdateEditText method in your inherited class. To do this, use the following code.
    protected override void UpdateEditText()
    		Invoke(new MethodInvoker(UpdateEditTextBase));


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


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

  • Microsoft .NET Framework 1.1
  • Microsoft .NET Framework 1.1 Service Pack 1
kbnosurvey kbarchive kbwinserv2003sp2fix kbhotfixserver kbqfe kbfix kbbug KB896665
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