Cannot use the email function at all

I run X8.2 desktop version ( on windows 10. I use Outlook 2016 64 bit set as default email client.

Every time I right click on a reference and select Email Reference I get an error message saying Endnote Error. I get the same error when clicking on the email icon above the pdf in the reference pane.

Can you please advise how to fix this so I can email references please.