In the Horizon Administrator dashboard, you can configure Horizon 7 to trust a vCenter Server or View Composer certificate that is untrusted.

VMware strongly recommends that you configure vCenter Server and View Composer to use SSL certificates that are signed by a CA. Alternatively, you can accept the thumbprint of the default certificate for vCenter Server or View Composer.

Similarly, VMware recommends that you configure SAML 2.0 authenticators to use SSL certificates that are signed by a CA. Alternatively, in the Horizon Administrator dashboard you can configure Horizon 7 to trust an untrusted SAML 2.0 server certificate by accepting the thumbprint of the default certificate.