DOCUMENT:Q190004 05-AUG-2000 [iis] TITLE :Error 403.7 or "Connection to Server Could Not Be Established" PRODUCT :Internet Information Server PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== One of the following errors occurs when trying to browse a Web site that has Secure Sockets Layer (SSL) enabled: - HTTP Error 403 403.7 Forbidden: Client certificate required This error occurs when the resource you are attempting to access requires your browser to have a client Secure Sockets Layer (SSL) certificate that the server recognizes. This is used for authenticating you as a valid user of the resource. Please contact the Web server's administrator to obtain a valid client certificate. -or- - Connection to the server could not be established. CAUSE ===== The Internet Explorer client certificate and the Internet Information Server (IIS) client certificate need to be synchronized. WORKAROUND ========== To work around this problem, run the following three commands from a command prompt in the <%SystemRoot%>\System32\Inetsrv directory: IISCA Net Stop IISAdmin /y Net Start W3SVC (c) Microsoft Corporation 2000, All Rights Reserved. Contributions by Kevin Zollman, Microsoft Corporation. Additional query words: ====================================================================== Keywords : Technology : kbiisSearch kbiis400 Version : winnt:4.0 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.