I have a strange issue here. I have a web application where people login and I store their user id in the session. There is a third part application that starts a page on the web application every time the agent gets a phone call. In most cases, the page started from the third party app can read the session and extracts the user id. I have three computers where that does not happen, when I try to read it I get null.
Any ideas why this works on most computers and not on these three?