That all looks correct. Could you confirm the version of python you are using to run the command (e.g. python -V) - I would expect this to return 2.7.13. Could you also check that your computer's time is set correctly.

Do you also have issues when visiting https://fsl.fmrib.ox.ac.uk in a web browser - in Safari you should see a padlock to the left of the URL if the TLS connection has been setup correctly.

Duncan

On 17 May 2017, at 16:27, Thomas Radman <[log in to unmask]> wrote:

Thank you for your help.  I ran the command and then "> ssl_output".  Is that what you wanted?  See attached.

On Wed, May 17, 2017 at 11:19 AM, Duncan Mortimer <[log in to unmask]> wrote:

Hi,

Could you send the output of:

openssl s_client -verify 4 -showcerts -connect fsl.fmrib.ox.ac.uk:443 </dev/null

to me.

Regards,

Duncan

> On 17 May 2017, at 15:13, Thomas Radman <[log in to unmask]> wrote:
>
> Hello,
>
> I am trying to install FSL on a mac running Sierra and as soon as I run python fslinstaller.py I get a message:
>
> [FAILED] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:661)
>
> Is this an issue with my IT certificate and ability to use SSL or have others had this issue?  Any advice on how to proceed?
>
> Thank you,
> Tom

--
Duncan Mortimer
Senior Informatics Officer, FMRIB Centre, University of Oxford
John Radcliffe Hospital, Oxford, UK

<ssl_output>

-- 

Duncan Mortimer

Senior Informatics Officer, FMRIB Centre, University of Oxford

John Radcliffe Hospital, Oxford, UK