Windows7 IIS 500– Internal Server error Resolution
1. Workaround: Open IIS, find "error page" in Features view, double-click to see "Edit feature Settings ..." under "action" on the far right, and "detailed error" under "Error response ".
2. Open Control Panel → Administrative Tools →internet information Services (IIS) Manager → Double-click the ASP icon, then expand Debug Properties in the right-hand window and set "Send error to Browser" to true. Microsoft Security-based considerations do not send error messages to the browser, remember to restore this setting when the site is officially published.
3, the local browser removed the "Show HTTP friendly error prompt" option, showing: php-cgi.exe-fastcgi process exceeded the configured activity timeout period
4, the solution: iis7->fastcgi settings, double-click the "Php-cgi.exe" and "Activity timeout" item by default is set to 70 (seconds), instead of 600 (10 minutes, here according to the requirements can be set slightly higher ~)
500– Internal server error. There is a problem with the resource you are looking for, so it cannot be displayed.