Session_OnEnd event is supported only the in-process session-statemode

[John H]

Hi,
I'm aware that The Session_OnEnd event is supported only the in-
process session-state mode. This event is not raised if you use State
Server or SQL Server modes.

Any pattern for simulating this behavior in case where sql server used
for session state?

Site is deployed to a web farm hence use of sql server.
Scenario is that when asp.net session timeout occurs that event gets
raised to one or all of the nodes on the web farm and they then call
an api in a 3rd party authentication product to logoff the user.

Thanks for all info.
John