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

Another thing to check is whether you have Windows Firewall enabled, since that might be blocking port 42424.

Answer 2

One of my clients was facing the same issue. Following steps are taken to fix this.

 (1) Open Run. 

 (2) Type Services.msc

 (3) Select ASP.NET State Service

 (4) Right Click and Start it.

Answer 3

Check that:

stateConnectionString="tcpip=server:port"

is correct. Also please check that default port (42424) is available and your system does not have a firewall that is blocking the port on your system

Answer 4

I've had the same issue when some ASP.NET installation was corrupted. In that case they suggest running aspnet_regiis -i -enable