Unable to make the session state request to the session state server

Question

Our site is currently having this problem. Basically it only happen when we click some particular links where it will pop-up a new window.
This is the error message we

Answer 1

1. Start–> Administrative Tools –> Services
2. Right-click on the ASP.NET State Service and click “start”

Additionally you could set the service to automatic so that it will work after a reboot