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Knowledge Base

Multiple Internet Explorer Instances Do Not Redraw Screen Correctly

Article ID: 246113

Article Last Modified on 10/9/2003

APPLIES TO

Microsoft Internet Explorer 4.01 Service Pack 2
Microsoft Internet Explorer 3.02

This article was previously published under Q246113

SYMPTOMS

When you start multiple new instances of Internet Explorer (for example, by pressing CTRL+N) and then move the windows around the screen, the browser's window data may be corrupted. This occurs only on multiple-processor computers with the color palette set to 256 colors.

CAUSE

This behavior is caused by the way Mshtml responds to the WM_PAINT message.

RESOLUTION

To resolve this issue, upgrade to Internet Explorer 5.01.

WORKAROUND

To work around this behavior, use any of the following methods:

Set the color palette to more than 256 colors:
1. Right-click the desktop, and then click Properties.
2. Click the Settings tab.
3. In the Color Palette box, click a setting with more than 256 colors.
4. Click OK.
Disable all but the first processor by adding "Numproc=1" to the Boot.ini file.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbprb kbdisplay KB246113

Microsoft KB Archive/246113

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