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  • Stelios Giannoulis 4 posts 84 karma points
    Jun 05, 2018 @ 10:59
    Stelios Giannoulis

    Free ssl certificate installation in umbraco multisite setup?


    we are using umbraco cms in multisite setup (,, etc.) . We want to install a free ssl certificate for SEO reasons. Preferably a free ssl certificate like let's encrypt which is supported by the hosting company. All websites\domains share the same IP. We don't need necessarily to install an ssl certificate\ domain; we could also install an ssl certificate that will cover all domains.

    Is it possible to install let's encrypt or any other free ssl certificate to a multisite umbraco setup?

    So far I have not found online a lot of information on that and how to do it .

    Thank you very much in advance!

  • Nik 868 posts 3445 karma points MVP c-trib
    Jun 05, 2018 @ 11:29

    Hi Stelios,

    Yes it is possible to use a LetsEncrypt certificate with an Umbraco site with multiple domains (which is basically what you are asking).

    It's just the same as performing the actions for a site with a single domain. As long as all your domains are configured properly you shouldn't have any issues. The steps are just the same.

    If you have direct access to your webserver, I would use something like this to manage a letsEncrypt certificate.



  • Stelios Giannoulis 4 posts 84 karma points
    Jun 05, 2018 @ 13:08
    Stelios Giannoulis

    Thank you very much for your quick reply, Nik!

    I have already started looking into certifytheweb!



  • Sjors Pals 615 posts 267 karma points
    Jun 14, 2018 @ 12:10
    Sjors Pals

    I just set it up, the only thing you have to change in umbraco is the reserved path setting in the web.config:

        <add key="umbracoReservedPaths" value="~/umbraco,~/install/,~/.well-known/" />
  • Jan Skovgaard 11151 posts 22815 karma points MVP 5x admin c-trib
    Jun 14, 2018 @ 12:15
    Jan Skovgaard

    You probably also want to run the backoffice under SSL? Then you need to set this line in the web.config to true:

    <add key="umbracoUseSSL" value="false" />

    Like this

    <add key="umbracoUseSSL" value="true" />

    Cheers, Jan

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