Rajeev Pentyala – Technical Blog on Power Platform, Azure and AI

We had a requirement to fetch and display data from external hosted service, on a HTML web resource  hosted in CRM.

So I created a HTML file with below logic to fetch data from external hosted service.

var xmlhttp = new XMLHttpRequest();
xmlhttp.open(‘POST’, {External Service URL}, false);

xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4) {
if (xmlhttp.status == 200) {
// Success
}
}
}

The logic was working fine, when I tested individual HTML fine.

But when hosted in CRM, I was getting “Network Error”.

Reason :

• Cross domain issue while accessing HTML from CRM

Fix :

• Setting “Access data sources across domains” to “true” in IE browser solved the issue

🙂