Can we install same ssl certificate on all sub domains of same website?

We have a website and we already installed ssl on it. Now we want to put that ssl on our sub domain - can we do this or not?


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Yes this is possible with a wild card SSL certificate. It would be valid for all of your subdomains: *

If you are using Let’s Encrypt you could follow these steps here on how to install a Wildcard SSL certificate:

In case that you are using another SSL provider, you need to get a new certificate and make sure that it is a Wildcard one.

Hope that this helps! Bobby