On a newly installed Symantec Endpoint Protection Manager (SEPM), after logging into the console when clicking on any reporting aspects of the console it will timeout and display the error: "This page can't be displayed".
After login to the manager you see "This page can't be displayed"
In the reporting logs you will see similar error:
PHP Fatal error: Maximum execution time of 2700 seconds exceeded in C:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\Php\Include\Resources\session.php
In some customer environments, where firewall/proxy devices exist that filter or block outbound traffic the function cURL will be waiting for the HTTP response which can cause the Php-CGI to hang and results in the HomePage not loading successfully. Other pages are not loaded as well because the Php-CGI is hung and cannot service those requests.