DOCUMENT:Q317208 06-AUG-2002 [iis] TITLE :Cannot Download Microsoft Office Documents from IIS Server PRODUCT :Internet Information Server PROD/VER::5.0 OPER/SYS: KEYWORDS:kbdocerr ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Services version 5.1 - Microsoft Internet Information Services version 5.0 - Microsoft Internet Explorer version 6 for Windows 2000 ------------------------------------------------------------------------------- SYMPTOMS ======== When you try to download Microsoft Office documents from a server running Internet Information Services (IIS) to a client using Microsoft Internet Explorer version 6, you may receive the following error messages: Internet Explorer cannot download from . Internet Explorer was not able to open this Internet Site. The requested site is either unavailable or cannot be found. Please try again later." Note:This problem is not reproducible with any other known file types. CAUSE ===== This behavior occurs when the Content Expiration option in the Hypertext Transfer Protocol (HTTP) Headers, within IIS, is set to Expire Immediately. Internet Explorer must save any Microsoft Office file to the local cache directory, and then use the associated application to open the file. If you set Content Expiration to Expire Immediately, the Office documents are not cached locally and the operation fails. RESOLUTION ========== When you configure the HTTP Headers within IIS for the Virtual Directory (or for the Directory) that contains Office documents, do not set Content Expiration to Expire Immediately. MORE INFORMATION ================ This is a known cause of slow performance on a Web server running IIS. This is not a best practice. Additional query words: iis 5 internet explorer 6 content expiration expire immediate immediately ====================================================================== Keywords : kbdocerr Technology : kbOSWin2000 kbiisSearch kbIEsearch kbIE600Search kbiis500 kbIE2000Search kbIE600Win2000 kbiis510 Version : :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 2002.