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Read Me First
This update resolves the "Invalid URL" security
vulnerability in Internet Information Server (IIS). If an
invalid URL is sent to a server with this vulnerability, it
could, under certain conditions, cause the server to access
invalid memory and cause IIS to fail. Download now to prevent
a malicious user from disabling requests for Web pages, File
Transfer Protocol services, and other services provided by
This vulnerability does not provide the opportunity to
compromise any data on the server or to usurp any
administrative privileges on the server. In addition, an
affected computer can be put back into useful service by
restarting the IIS service.
For more information about these vulnerabilities, please
read Microsoft Security Bulletin MS00-063.
This update applies to Internet Information Server 4.0
How to download and install
save your work and close all open programs before installing.
- Select your language from the drop-down list above.
- Click Next.
- Click Download Now.
- Follow the instructions on your screen.
How to use
Please restart your computer to complete the install.
How to uninstall
- Click Start, point to Settings and click
- Double-click Add/Remove Programs.
- Select Windows 4.0 Hotfix [See Q271652 for more
information] and click Add/Remove to uninstall.