Windows HTTP Services Availability

Article
02/02/2010

Applies To: Windows Server 2008

Windows HTTP Service Availability relates to whether the Windows HTTP Service (WinHTTP) is available to service requests from applications. No user action is required.

Events

Event ID	Source	Message
1	Microsoft-Windows-WinHttp	%1
2	Microsoft-Windows-WinHttp	%1
4	Microsoft-Windows-WinHttp	%1
12501	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service detected an internal data corruption.
12503	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service has been idle for %1 minutes and will be shut down.
12506	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service encountered a system error from %1: (Error Code = %3) %2
12507	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service failed to allocate a critical resource. The system may be running low on physical memory.
12509	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service detected a non- local Remote Procedure Call (RPC) request (Transport Type = %1); Access Denied. There may have been a rogue attempt to gain access to the service through the network.
12511	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service failed to abort all pending requests in %1 seconds. The system WinHTTP Services may have been under stress and slow to respond to cancel requests.
12512	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service failed parameter validation of a client request. This may be due to an unexpected error from the system WinHTTP Services.
12513	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service is shutting down and not accepting client requests.
12514	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service detected an unexpected exception from the system WinHTTP Services. (Exception Code = %1)
12516	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service discarded and is re-attempting a request after a critical power event.
12517	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service suspended operation.
12518	Microsoft-Windows-WinHttp	The WinHTTP Web Proxy Auto-Discovery Service resumed operation.

Windows HTTP Services