OK, JIM, Now i have imported the root certificate to the trusted root certification authority store at ISA server. BUT the error now changes and whenever any external user accesses that secure site it says : Error Code: 500 Internal Server Error. The target principal name is incorrect. (-2146893022) what does it mean? Jim Harrison <Jim@xxxxxxxxxxxx> wrote: http://www.ISAserver.org ------------------------------------------------------- Must reading error text. * Error Code: 500 Internal Server Error. The certificate chain was issued by an authority that is not trusted. (-2146893019) This is very clear - the certificate passed to ISA from the upstream server is issued by a certificate authority that is unknown to the server where ISA resides. You need to import the CA cert into the ISA local machine trusted root store. ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Faraz Hassan Khan Sent: Thursday, May 18, 2006 08:42 To: isalist@xxxxxxxxxxxxx Subject: [isalist] Publishing Secure Web site. Error Code: 500 Hi I published a secure website, but when external users try to access that they recieve error * Error Code: 500 Internal Server Error. The certificate chain was issued by an authority that is not trusted. (-2146893019) The Certificate Common name is same as the FQDN of the website bmj.tzo.com but i am still having this problem? ________________________________ Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2¢/min or less. All mail to and from this domain is GFI-scanned. ------------------------------------------------------ List Archives: //www.freelists.org/archives/isalist/ ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server Articles and Tutorials: http://www.isaserver.org/articles_tutorials/ ISA Server Blogs: http://blogs.isaserver.org/ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ To unsubscribe visit http://www.isaserver.org/pages/isalist.asp Report abuse to listadmin@xxxxxxxxxxxxx --------------------------------- Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.