DOCUMENT:Q248061 18-FEB-2000 [iis] TITLE :Err Msg: HTTP 414 - Request - URI Too Long PRODUCT :Internet Information Server PROD/VER:winnt:5.0 OPER/SYS: KEYWORDS:kbOSWin2000 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Services version 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you connect to Internet Information Services (IIS) through a browser, you may receive the following error message: HTTP 414 - Request - URI Too Long CAUSE ===== The server is refusing to service the request because the Request-URI is too long. This rare condition is likely to occur in the following situations: - A client has improperly converted a POST request to a GET request with long query information. - A client has encountered a redirection problem (for example, a redirected URL prefix that points to a suffix of itself). - The server is under attack by a client attempting to exploit security holes present in some servers that use fixed-length buffers to read or manipulate the Request-URI. IIS checks the string length of the URI and does not service a request when the URI is longer than expected. This is by design. Additional query words: IIS 5 ====================================================================== Keywords : kbOSWin2000 Technology : kbiisSearch kbiis500 Version : winnt:5.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.