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Ajax Session timeout problem

Posted By:      Posted Date: September 08, 2010    Points: 0   Category :ASP.Net
Hi,  I have some problems when using AJAX with updatepanels. I have an ASP.NET webapplication with a login that uses form authentication with the timeout set to 5 min. After 5 min of idle the site should be redirected to the login.aspx page. My problem is that after using the site for 5 minutes when clicking on contents inside an updatepanel I get a messagebox with the following error: A Runtime Error has occurred.Do you wish to Debug? Line: 4723Error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 12031  I think that it has something to do with the ajax updatepanel since when I remove the updatpanels this problem does not appear. Instead the site is redirected to login.aspx as expected. When searching on the problem on google I see alot of people having similar problem, but I haven't found suitable solution. Any suggestions?

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