2221: W3 message SSI too many nested includes
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 2221 is generated when a server side include file has included itself or the maximum depth of server side includes has been exceeded.
How could you resolve this situation?
Check if a server-side include file has included itself. And then check if maximum depth of server-side includes has been exceeded.