Multiple Internet Explorer Instances Do Not Redraw Screen Correctly

This article was previously published under Q246113
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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.
This behavior is caused by the way Mshtml responds to the WM_PAINT message.
To resolve this issue, upgrade to Internet Explorer 5.01.
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.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Article ID: 246113 - Last Review: 10/22/2013 02:33:36 - Revision: 3.0

  • Microsoft Internet Explorer 4.01 Service Pack 2
  • Microsoft Internet Explorer 3.02
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