We've received a request to pulled an RSS feed from an external site. The problem is when we put a https url in the RSS Feed URL it returns the message that the feed could not be displayed. This is not an issue if we use an http URL.

The problem is that on our staging environment it works fine with an https url. I'm trying to track down what the possible cause could be and not sure where I should start. Any suggestion would be welcomed.

Update: Checking the logs I see this error

RssWebPart: Exception handed to HandleRuntimeException.HandleException System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
at Microsoft.SharePoint.WebControls.BaseXmlDataSource.GetXmlDocument()
at Microsoft.SharePoint.WebControls.SingleDataSource.GetXPathNavigatorInternal()
at Microsoft.SharePoint.WebControls.SingleDataSource.GetXPathNavigator()
at Microsoft.SharePoint.WebPartPages.DataFormWebPart.GetXPathNavigator(String viewPath)
at Microsoft.SharePoint.WebPartPages.DataFormWebPart.PrepareAndPerformTransform(Boolean bDeferExecuteTransform)

I double checked which .net version I have and on my Prod it's 4.7.02053 and staging 4.7.03062


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