PBI Embedded: The request was aborted: Could not create SSL/TLS secure channel.

Hi All,

I'm attempting to embed a report into a web page using the sample embed tool provided at: 

https://app.powerbi.com/embedsetup/AppOwnsData

Scenario is that I am trying to embed the same report to two different organisations.

I've filled out the tool using an account from both organisation A and organisation B.

Both accounts have Power BI Pro licences.

When I run the embedded sample app and click view report - the report loads for org A but when loading for org B I get the following error: 

The only thing that is different between the two different apps is the web.config file (specifically only the applicationID, workspaceID and reportID + user credentials differ). 

Could someone please explain this error to me? and/or provide a suggestion to how to fix it?