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FP2000: HTTP 404 Error When You Browse Folder with Percent Sign in Name


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This article was previously published under Q289623

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Symptoms

When you attempt to browse a folder that contains a percent sign in the name, you may receive an error message similar to the following:
HTTP/1.1 404 Object Not Found

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Cause

A percent sign is used to define an "escape sequence" in a Web address, according to section "2.4. Escape Sequences" in the Request for Comment (RFC) article number 2396.

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More information

Escape sequences are used in a URL to allow characters that may exist in a folder or file name that are not allowed in a URL. The syntax for an escape sequence is defined as a percent sign followed by two hex digits (for example, %A1, %2B, and so on). When you name a folder with a percent sign, if the characters following the percent sign happen to be valid hex characters, the folder name may not be resolved correctly. For example:
Naming a folder "100%DAD" may fail, because the two characters following the percent sign are valid hex characters. In this case, the "%DA" sequence may be misinterpreted as character 218, which, depending on the character set being used, may be a "Latin Capital U with Acute". This results in a Web request for a folder name that may not physically exist on the server.
Naming a folder "100%MOM" may work, because the two characters following the percent sign are not valid hex characters.

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References

For more information, please browse to the following FTP sites:
RFC 2396�Uniform Resource Identifiers (URI): Generic Syntax
RFC 2396�Hypertext Transfer Protocol - HTTP/1.1
For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
284278 FP2000: Cannot Open a Subweb with an Ampersand Character in the Name

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Keywords: KB289623, kbprb

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Article Info
Article ID : 289623
Revision : 1
Created on : 10/1/2002
Published on : 10/1/2002
Exists online : False
Views : 340