FIX: A TextBox control within a UserControl control in a .NET Framework 1.1 ASP.NET Web application loses focus in Internet Explorer when you switch to another application and then back to Internet Explorer

Consider the following scenario. You have a UserControl control in a Microsoft .NET Framework 1.1 ASP.NET Web application. You add a TextBox control in the UserControl control. You open the Web application in Microsoft Internet Explorer, and then you put focus on the TextBox control. You switch to another application other than Internet Explorer. You switch back to the Web application in Internet Explorer. In this scenario, the TextBox control no longer has focus when you switch back to Internet Explorer.

Service pack information

To resolve this problem, obtain the latest service pack for the Microsoft .NET Framework 1.1. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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 Microsoft .NET Framework 1.1 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.

Prerequisites

You must have the Microsoft .NET Framework 1.1 intalled before you 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.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in the Microsoft .NET Framework 1.1 Service Pack 1.

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