I tried upgrading Moodle from 3.3.1 to 3.4.3 and now get an Error 500.0 (FastCGI) error in https://www.mywebsite.com/moodle
DETAILS:
Windows 2012 R2 iis 8
Moodle 3.3.1 was on PHP 5.6, changed to 7.1.2 which the docs say is now required. PHP Version 7.1.2 is already configured and running another website with mysql database (using mysqli ext).
I can run phpinfo() in my https://mywebsite/moodle/phpinfo.php
If I go to https://www.mywebsite.com/moodle it gives me the error and changes the url to https://www.mywebsite.com/moodle/admin/index.php
I enabled the php extension in php.ini --> extension=php_intl.dll as required for 3.4.3
I would imagine there is a configuration error for php 7.1.2. However, it runs my other website without any issues. Any ideas?