I've tried using the Mail app, Calendar app and the Settings > Accounts page. All have the same result - I see the Google login screen very briefly, then an error indicating that my network connectivity is bad (it's not), and once that is closed, I get an error code: 0x800b0109.

That error indicates some sort of certificate trust issue - but I can log into the same account with any of the browsers, including Edge. I've tried clearing the IE SSL state and I've looked at the certificates but I don't see anything wrong.

Any ideas? I'd really like to add my Gmail + Calendars + Contacts to this machine!

Thanks for any tips,
Mark Smith