Microsoft KB Archive/247643

= HTTP/1.1 Error 501 - Not Implemented =

Article ID: 247643

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft Internet Information Services 6.0
 * Microsoft Internet Information Services 5.0

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This article was previously published under Q247643



SYMPTOMS
When you attempt to use an unknown method from an Internet client, the following error message occurs:

HTTP/1.1 501 Not Implemented



CAUSE
This behavior is by design. Internet Information Services (IIS) only supports the methods defined in "RFC 2616 - Hypertext Transfer Protocol -- HTTP/1.1" and "RFC 2518 - HTTP Extensions for Distributed Authoring -- WEBDAV." The methods are listed in the following table:



MORE INFORMATION
For more information on these topics, please see the information at the following:
 * RFC 2616 - Hypertext Transfer Protocol -- HTTP/1.1
 * RFC 2518 - HTTP Extensions for Distributed Authoring -- WEBDAV

Additional query words: prod2web

Keywords: kbnofix kbhttp501 kbprb kbprod2web KB247643

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