ASPX Script Timing Out Due to Session Timeout: How to Increase the Limit

Symptoms

The ASP.NET session timeout for the site is set to 60 minutes in Domains > example.com > ASP.NET settings, however the client's script times out after 5-10 minutes.

Cause

Application Pool Idle Timeout affects script timeout.

Resolution

Adjust the Application Pool Idle Timeout in IIS > Application pools > Domain Application Pool > Properties > Idle Time-out.

Also, it might be required to set additional timeout in IIS > Website > example.com > Session State > TimeOut.

For additional information and code examples please refer to the Official Microsoft IIS Site.