Select whether to restrict cross-frame scripting The following sections describe your options if you want these controls to show more than static content. More information: Silverlight (XAP) Web Resources Silverlight is included for backward compatibility only and is not recommended. You can use one of the following web resources to display the contents of web resources in a form: Displaying an entity form within an IFrame embedded in another entity form is not supported. You can use an IFRAME to display the contents from another website in a form, for example, in an ASP.NET page. The specific scenario of embedding an entity form within an IFRAME, embedded in another entity form, is not supported. Some embedded IFRAMEs might work in a browser client if the user directly logs into the external service, but this is not supported in mobile or tablet applications.

IFRAMEing content that is behind an authentication boundary is not supported through web resources or Power Apps component framework. If your IFRAME depends on access to the Xrm object of the page or any form event handlers, you should configure the IFRAME so that it's not visible by default.

Web resources and IFRAMEs aren't displayed using the Dynamics 365 for Outlook reading pane, however, they are supported in Dynamics 365 for tablets. The designs you choose for the form are also used for the Dynamics 365 for Outlook reading pane and forms used by Dynamics 365 for tablets.

Iframe website