Thread:Project:Support desk/New Installation of MediaWiki fails at log in /create account with 500 error

I have recently installed mediawiki on a test network with the following configurations: MediaWiki version - 1.18.2 PHP - 5.40 Database - MySQL 5.5.22 win 64 Operating System - Windows Server 2008 R2 IIS - 7.5

I followed the installation guide, and was able to successfully generate the LocalSettings.php file When I launch MediaWiki (http://localhost/Mediawiki/Index.php), I get the Main Page. When I click on the Log In / Create Account menu at the top right, it returns a 500 error.

Any pointers as to troubleshooting, and ultimately resolving this would be created.

Many thanks

Dante