You're tell us what the basic anomaly is but provide very little information otherwise to zero in on anything specifically.
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1. The article [Q217116] warns that an Internet Explorer Script Error may occur when accessing Windows Update if your Internet Service Provider (ISP) uses auto-configuration servers and discusses the potential fix.
2. The article [Q308260] states that a Web page may not display or work correctly and you may receive a Script Error because the HTML source code for the Web page does not work correctly with client-side scripts such as Microsoft JScript or Visual Basic and suggest several troubleshooting tips as well as updates to fix the issue(s).
3. The article [814458] describes the by design condition that occurs after you install the February, 2003, Cumulative Patch (MS03-004) for Internet Explorer (prevents malicious Web sites from accessing information in another Internet domain, or on your local computer) when scripts in an HTML dialog window (that is opened by using the showModalDialog or showModelessDialog method) tries to set the security domain of the document to a different value.
4. Please read the article, "How to strengthen the security settings for the Local Machine zone in Internet Explorer (Q833633)."