The Internal Discovery Service URL provided is not Valid

Hi,

I have installed Tenant Services on GP2016.

I can access the URL's successfully from within IE, however when I choose 'Deploy for Multi tenants' in either my web client install or web services install , and then enter the 2 URL's e.g.

Discovery Service: https://gpserver:48630/TenantDiscoveryService

Management Service: https://gpserver:48631/TenantManagementService

I get the error:

The Internal Discovery Service URL provided is not Valid

The Internal Management Service URL provided is not Valid

My tenant service services are started.

Do you have a reason why this happens and how I can bypass this.

Thank you

Neil