Hi Ravi,

I did a small POC to detect tab close event in Pega 8.4. I can able to achieve using the below code in UserWorkForm rule.

<script>

window.addEventListener("beforeunload", req, false);

function req(){
    var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
               // var myArr = JSON.parse(this.responseText);
                
               // console.log(myArr);
            }
        };
        xmlhttp.open("GET", "https://dfbxcb.free.beeceptor.com", true);
        xmlhttp.send();

    }
</script>

The above code listens for Tab close, Reload, and Browser close events.

I used https://beeceptor.com/ to create a dummy service and to test whether the service is invoked.

I hope it helps you a bit.

Good Luck!

No luck Duraisankar.