500.0: Module or ISAPI error occurred.
500.11: Application is shutting down on the web server.
500.12: Application is busy restarting on the web server.
500.13: Web server is too busy.
500.15: Direct requests for global.asax are not allowed.
500.19: Configuration data is invalid.
500.21: Module not recognised.
500.22: An ASP.NET httpModules configuration does not apply in Managed Pipeline mode.
500.23: An ASP.NET httpHandlers configuration does not apply in Managed Pipeline mode.
500.24: An ASP.NET impersonation configuration does not apply in Managed Pipeline mode.
500.50: A rewrite error occurred during RQ_BEGIN_REQUEST notification handling. A configuration or inbound rule execution error occurred.
500.51: A rewrite error occurred during GL_PRE_BEGIN_REQUEST notification handling. A global configuration or global rule execution error occurred.
500.52: A rewrite error occurred during RQ_SEND_RESPONSE notification handling. An outbound rule execution occurred.
500.53: A rewrite error occurred during RQ_RELEASE_REQUEST_STATE notification handling. An outbound rule execution error occurred. The rule is configured to be executed before the output user cache gets updated.
500.100: Internal ASP error.