Question

When i copy the URL from one browser to paste it in another browser my session data not retrieved it shows “Object reference not set to an instance of an object”.

Answer 1

You will not be able to access session values across multiple browsers.

Also, you should check if the value exists in Session to avoid Server Error.

if(Session["Key"] != null)
{
//Write your code here
}
else
{
 //Alternative code (redirection code)
}