Please follow the steps below to set the ASP.NET session state timeout value for a domain/directory:-
1: Open the IIS Manager on the server.
2: Select your domain under ‘Sites’ and double click on the domain name.
3: After this, the domain settings section will be shown there with the IIS section in it.
4: Under the IIS section, double-click on ASP and then you can see ASP properties.
5: In the ASP settings, find the ‘Session Properties’ section. Expand it.
6: In Session Properties, you will see ‘timeout’. The default value is 00:20:00(HH:MM:SS), 20Min.
7: Increase the timeout value as per your application’s need and then click on the APPLY changes option which we can see on the top right side corner for that domain.
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