I add a subdomain to my site https://marketpro.cashflow.rentals. It seemed to be working fine and then my main web site, https://cashflow.rentals, and the one first mentioned both got the your connection is not private message in chrome shortly after. I noticed the problem days later.
I downloaded and reran LetsEncrypt. Both sites started working. I tested it a day or two later and the same issue occurs. If I go into IIS and stop the marketpro.cashflow.rentals domain, the main one starts working again.
My domain is: https://cashflow.rentals
My web server is (include version): IIS Version 1809
The operating system my web server runs on is (include version): Windows Server 2019
I can login to a root shell on my machine (yes or no, or I don't know): Yes
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): No
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you're using Certbot): No
the cert is for dev.cashflow.rentals.
not for cashflow.rentals or the subdomain.
you need 2 certs for that, or multicert all domainsnames, or wildcard cert for the domain.
Thanks for the reply. Are there instructions in the acme application on how to set up what you're saying?
There is no such thing as THE ACME application: there are multiple. It would help us greatly if you told us which tool you've used to get the certificates in the first place.
with certbot, for example, you create a new cert and name the domin with the switch
-d cashflow.rentals -d marketpro.cashflow.rentals
Your certificate for your apex domain
cashflow.rentals and your
marketpro subdomain both come back to your
dev.cashflow.rentals subdomain. You should create a certificate for your apex domain
cashflow.rentals and add the other subdomains using the
-d (subdomain) switch as mentioned by .
cashflow.rentals is your "main domain" as you said, you sort of forgot to create a certificate for it.
Another point to consider: Some people may type
www. before your domain name. If they do, you'll want a redirect from www subdomain to the apex domain or the other subdomains without the
As @Osiris mentioned above it would help if you tell us what client and version you are using to obtain your cert, instead of saying "No".
This is what I used to get the certificate created. I ran their executable and answered there questions in the command prompt. Maybe I chose something wrong. - https://www.win-acme.com/
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