I get this all the time on a Windows CI build (Appveyor). I think the
problem is related to out of date ssl/gnutls libs, and maybe an update on
emacs would fix it.

I don't have a Windows machine to test this, but someone else has been
documenting some of the issues and at least partial solutions at
https://github.com/jkitchin/scimax/issues/159

If you are on windows, it might help.

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Tue, Feb 20, 2018 at 2:05 AM, Stephen Eglen <sje30@cam.ac.uk> wrote:

> Hi,
>
> Following instructions on https://orgmode.org/elpa.html, when I
> list-packages, I see the following in *Messages*
>
>
> Importing package-keyring.gpg...done
> Opening TLS connection to ‘orgmode.org’...
> Opening TLS connection with ‘gnutls-cli --x509cafile /etc/ssl/certs/ca-certificates.crt
> -p 443 orgmode.org’...failed
> Opening TLS connection with ‘gnutls-cli --x509cafile /etc/ssl/certs/ca-certificates.crt
> -p 443 orgmode.org --protocols ssl3’...failed
> Opening TLS connection to ‘orgmode.org’...failed
> Failed to download ‘org’ archive.
>
> Have I got a broken install somewhere?
>
> Thanks, Stephen
>
>