We recently upgraded a Mac server’s operating system from Mac OS X Server 10.7.5 to Mac OS X Server 10.8.2.  After the upgrade, Server.app refused to connect to the server.  Instead, Server.app would display the error, “An SSL error has occurred and a secure connection to the server cannot be made.”  Without Server.app, you can’t easily continue setting up the server.  Here is what the error looks like:

We have upgraded quite a few Mac servers from Lion Server to Mountain Lion Server and this was the first time we ran into this error.  After our banging our heads against a wall for over an hour, we found a solution in the Apple Support Communities .  Since then, Apple documented the problem and the solution in Knowledge Base article TS4493.  According to Apple, the problem occurs on some systems when Server.app version 2.2 is installed.  The solution is to delete the  “com.apple.servermgrd” identity preference and certificate.  The easiest way to do that is using Keychain Access which is located in /Applications/Utilities.  If you run into this problem,  be sure to check out Apple’s KB article.


Brightsource IT is an Information Technology provider located in St. Louis, Missouri. We have been providing complete IT management and tech support for small and medium businesses since 2004. As members of the Apple Consultants Network, we also provide Mac and iOS management training to corporate IT departments.