DOCUMENT:Q234923 31-JUL-2001 [iis] TITLE :Err Msg: HTTP/1.1 501 Not Supported PRODUCT :Internet Information Server PROD/VER:winnt:4.0,5.0 OPER/SYS: KEYWORDS:kbOSWin2000 kbiis500prod2web kbhttp501 kbProd2Web ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Services version 5.0 - Microsoft Internet Information Server 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you attempt to download a file from a server running IIS, the following error message occurs: HTTP/1.1 501 Not Supported CAUSE ===== This is by design. IIS does not serve files larger than 4 gigabytes (GB). WORKAROUND ========== Individual files greater than 4 GB can often be compressed using third-party utilities to reduce the file size for downloading. Additional query words: iis ====================================================================== Keywords : kbOSWin2000 kbiis500prod2web kbhttp501 kbProd2Web 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 2001.