2218: W3 message SSI error
The IIS web sites that use HTTP rely on several IIS components for their availability. The IIS World Wide Web Publishing Service (W3SVC) is one among them. The W3SVC is responsible for managing the HTTP protocol and HTTP performance counters.
Event 2218 is generated when the HTTP server encountered an error while processing a server side include file. The include file is specified in the event log message.
How could you resolve this situation?
Remove all executables from the specified include file. Another solution would be to check for a specific error number in the event log message and find out more about that error number.