DOCUMENT:Q251219 18-FEB-2000 [iis] TITLE :IIS Reserves the ".map" File Extension for Image Maps PRODUCT :Internet Information Server PROD/VER:winnt:4.0,5.0 OPER/SYS: KEYWORDS:kbOSWin2000 kbDSupport kbiis400 kbiis500 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server versions 4.0, 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== The ".map" extension is reserved and intended for association with server-side image maps in Internet Information Server (IIS). Altering the mime type is not recommended by Microsoft and is ignored in Internet Information Server 4.0. If a file is larger than 128 KB in size, has the .map extension, and is not an image map, then you may receive one or more of the following error messages in the browser: HTTP 500 - Internal server error -or- HTTP/1.1 500 Server Error -or- Network request is not supported CAUSE ===== Internet Information Server assumes all files that have a file extension of .map are image maps. RESOLUTION ========== This is by design. WORKAROUND ========== Use a file type other than ".map". MORE INFORMATION ================ Other ASCII files that are over 128 KB in size are not effected. If you have a file with another extension, such as "a01", that is larger than 128 KB, you will not have problems changing the mime type or viewing it in the browser. Additional query words: ====================================================================== Keywords : kbOSWin2000 kbDSupport kbiis400 kbiis500 Technology : kbiisSearch kbiis500 kbiis400 Version : winnt:4.0,5.0 Issue type : kbprb Solution Type : kbpending ============================================================================= 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.