Verification problem (windows 8)

[ste976]

My domain is: stepycon.com

I ran this command: sudo certbot certonly --standalone -d stepycon.com

It produced this output:correctly created all the *.pem certificates in /etc/…/live/stepycon.com

My web server is (include version): a jupyter notebook server, maybe based on tornado?
see this for more information: http://jupyter-notebook.readthedocs.io/en/latest/public_server.html#notebook-public-server
there is a section on using let’s encrypt.
on ‘jupyter_notebook_config.py’ i correctly pointed to fullchain.pem and privkey.pem

The operating system my web server runs on is: ubuntu 16.04 (it’s a vps by digitalocean)

My hosting provider, if applicable, is: domain name is from godaddy

I can login to a root shell on my machine:yes

more: with ufw port 8888 is allowed (same port allowed in ‘jupyter_notebook_config.py’). https is allowed too. and localhost is allowed too.

accessing with chrome from android (my cellphone) or a xubuntu machine (my personal laptop): CA verification is fine

problem:
accessing with chrome/explorer/firefox from a windows 8 machine (office PC): i cannot be verified. i get this error: NET::ERR_CERT_COMMON_NAME_INVALID
web certificate comes from [missing_subjectAltName]

any help?

[schoen]

Hi @ste976,

Could you give an example URL that currently gives that error so that we could try for ourselves?

[ste976]

thank you. i solved the problem by installing nginx and configuring nginx to redirect all requests to path /notebook to port 8888 on localhost where jupyter notebook is executed. the rerun certbot to secure nginx by following this: https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-16-04

now it works