Internal SSL resource no connection possible

[MarcoColt]

Hello,

we have an internal https resource with certificate from our internal root authority.
When we try to open this website, we get the following error message:

Cannot establish a secure connection to the URL. Check if this connection requires 'http:' instead of 'https:'. If the problem persists, contact your system administrator. Made https request for GET /adfs/ls/IdpInitiatedSignon.aspx HTTP/1.1 adfs.domain.local:443.

The root certificate is already added to Trusted Server CA's.

We have other websites where this is working without any problem.

Anyone a tip for us how to fix this?

Regards,
Marco

[zanyterp]

Are you needing to do SAML SSO to that resource?
Is there a non-SAML SSO URL that can be tested on that server?
Do you have SNI enabled on the server?

[MarcoColt]

Hello,

The resource is a ADFS 3.0 Server with activated SNI. We have disabled it and now it works.

Many thanks!
Marco

[zanyterp]

Thank you for the update; I am glad it works after disabling SNI
I would recommend you contact your account team and ask them to put in an enhancement for SNI support with SAML authentication (and general rewrite access)