The server was unable to process the request due to an internal error. For more information about the error, either turn on IncludeExceptionDetailInFaults
Hi Guys, I came across this issue today. I was totally blank. Later i started observing the issue and realised that, this issue is caused just because of mismatch of assembly version or any attribute in Security token service's web.config file (C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\WebServices\SecurityToken). Actual issue was i upgraded the assembly version and didn't do changes in web.config file of security token service This blog helped me to fix my issue http://underthehood.ironworks.com/2011/05/sharepoint-2010-an-exception-occurred-when-trying-to-issue-security-token-the-server-was-unable-to-p-1.html thanks pradeepa achar