Session timeout on server side in asp.net c#

Question

I have problem with session timeout even i added code in web.config as follows but its not working, it expires within 10 mins.

Answer 1

Despite your Server has session timeout of 20 minutes as you mentioned. you may lost session state data for the following reason:

• When IIS Application Pool restarts or reset.
• ASP.NET Worker Process is recycled unexpectedly.
• Overriding your bin or web.config.
• Or when you upload or delete any file in the application.

Solution: use StateServer session state mode:

visit this link to configure StateServer: Configure a State Server to Maintain Session State