April 13, 2023, 10:35am
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g.
crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is: cello-master.nedalert.nl
I ran this command: certbot certonly --webroot --test-cert --http-01-port 88 -v -d cello-master.nedalert.nl
It produced this output:
Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems:
Detail: 188.8.131.52: Fetching http://cello-master.nedalert.nl/.well-known/acme-challenge/HRvclMNIHmjORqoIBEXmGBr8BIW0wrE0Tqs_TE7fDIA: Timeout during connect (likely firewall problem)
My web server is (include version):
The operating system my web server runs on is (include version):
Windows Server 2022 Standard 21H2
My hosting provider, if applicable, is:
vdp-automation (Own Platform)
I can login to a root shell on my machine (yes or no, or I don't know):
I'm using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you're using Certbot):
April 13, 2023, 10:37am
You can't change the port that the HTTP challenge happens over. It must be port 80, according to the rules that Let's Encrypt needs to follow.
FWIW I can't connect to your server on port 80 nor 88.
April 13, 2023, 10:46am
I would like to know , does that mean the webserver has to serv on port 80 , also after the challenge?
Sorry if i misunderstand the system demands.
April 13, 2023, 11:37am
With port 80 activated the response from Certbot is the same.
The Website is responding on port 80.
Port 80 still looks closed to me for
April 13, 2023, 12:44pm
Port 80 is open for me in The Netherlands. Perhaps a geoblocking rule is active?
Yes, very much looks like a geographic based firewall.
April 13, 2023, 3:33pm
Thanks Osiris, MikMcQ,
The country blocking did the thing.
The certificate has been made.
Last job is to let my Apache work with it
first make sure your site is able to connect over phone without connecting your home wifi
April 13, 2023, 6:44pm
With geoblocking and assuming the phone service is in the same country as the server, that wouldn't really matter
But in general you're right indeed
May 13, 2023, 6:45pm
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