DOCUMENT:Q284984 11-JUL-2001 [iis] TITLE :Event ID 115 When Attempting to Connect to Web Site Using HTTPS PRODUCT :Internet Information Server PROD/VER::4.0,5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server 4.0 - Microsoft Internet Information Services version 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you attempt to connect to a Web site by using HTTPS, the following error message occurs in Microsoft Internet Explorer: This page cannot be displayed The following information occurs in the Event Logs: Event Type: Error Event Source: W3SVC Event ID: 115 Description: The service could not bind instance 1. The data is the error code. For additional information specific to this message please visit the Microsoft Online Support site located at: http://www.microsoft.com/contentredirect.asp. Data: 0000: 34 00 00 00 4... NOTE: The "instance" in the error description refers to the Web site number. As Web sites are added to IIS, they are incrementally numbered. This error indicates that the Default Web Site (or site number 1) is having problems. Specifically, in this example "Event ID: 115" refers to the SSL portion of the Default Web Site not being able to start. "Event ID: 113" refers to the port 80 bindings (non-SSL) having difficulty starting. CAUSE ===== This error can occur for several reasons, but basically, IIS is not able to bind to the port or IP address specified in your settings, because another program or service is already using them. For examples of this problem, and possible resolutions, see the "Workaround" section of this article. WORKAROUND ========== Example 1: Web site number 3 has the following settings: IP address assigned as 192.168.0.1 TCP Port assigned as 80 SSL Port assigned as 443 Host Header of www.company.com Web site number 10 has the following settings: IP address assigned as 192.168.0.1 TCP Port assigned as 80 SSL Port assigned as 443 Host Header of www.different.com To host multiple Web sites on IIS, each Web site must be unique by using different IP addresses, different port numbers, or different Host Headers. In this example, the settings seem to be correct, because the Host Header on each site is different. For the purpose of SSL, however, Host Headers cannot be used, which means that the SSL portion of the Web sites have the same settings. As the Web service initializes, it can start the first Web site completely. When it tries to start Web site 10, it can start the port 80 portion, but cannot start the port 443 portion, which causes the Event ID 115 error. To resolve this particular problem, assign one of these Web sites a different IP address, so that they are unique for both TCP and SSL. Example 2: Web site number 3 has the following settings: IP address assigned as "All Unassigned" TCP Port assigned as 80 SSL Port assigned as 443 Host Header is blank since we cannot use it with SSL Web site number 10 has the following settings: IP address assigned as 192.168.0.1 TCP Port assigned as 80 SSL Port assigned as 443 Host Header is blank since we cannot use it with SSL In this example, there are unique settings for both SSL and TCP, because Web site 1 is not bound to any particular IP address, and Web site 10 is bound to a particular IP address. If you are using SSL, when the SSL portion of Web site 1 initializes, it essentially binds to all IP addresses on port 443, which causes Event ID 115 on instance 10. Example 3: If you have assigned each SSL Web site a unique IP address and you still receive an Event ID 115, there may be some Advanced settings on a web site which are preventing the SSL portions of your Web sites from being unique. To view these settings go into the Properties for each Web site and click Advanced on the Web Site tab. You will see a section called Multiple SSL Identities for this Web Site. If the Web site only has one IP address assigned to it ensure that there is also only one SSL identity. Example 4: If all else fails, it is likely that another program or service is running on your computer that is already bound to port 443. If this is the case, all of your Web sites (instances) that use SSL are logged with an Event ID 115. To verify this, use the following steps: 1. From a command prompt, type "net stop iisadmin" (without the quotation marks), and then press ENTER to stop the IISADMIN service. NOTE: You may need to stop other IIS services. 2. Type "netstat -an" (without the quotation marks), and then press ENTER. (If the output is too long, you may need to pipe the output by using "| more" (without the quotation marks) or "> output.txt" (without the quotation marks).) 3. Look for "0.0.0.0:443" or any other IP address ending in ":443" under the Local Address column. 0.0.0.0 means something is bound to all IP addresses onport 443 and 192.0.0.1:443 (this is only an example) means something is bound to the IP address of 192.0.0.1 on port 443. If after the IISADMIN service is stopped, if you see "0.0.0.0:443," then something else is bound and listening on port 443 other than IIS. To allow your web sites to run properly stop the other program that is using port 443. Additional query words: iis 5 4 ====================================================================== Keywords : Technology : kbiisSearch kbiis500 kbiis400 Version : :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. 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