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Article ID: 890327 - Last Review: January 16, 2015 - Revision: 2.7

This article has been archived. It is offered "as is" and will no longer be updated.

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When you try to validate an HTML file at ( you receive the following error message:
Sorry, I am unable to validate this document because its content type is text/plain, which is not currently supported by this service.


Microsoft Windows XP Service Pack 2 is installed on your computer.


Update information

To resolve this problem, install the MS05-020 security update. For more information about how to install the MS05-020 security update, click the following article number to view the article in the Microsoft Knowledge Base:
890923  ( ) MS05-020: Cumulative security update for Internet Explorer

  • Microsoft Windows XP Professional SP2
kbnosurvey kbarchive atdownload kbwinserv2003sp2fix kbqfe kbprb KB890327
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