We have 2 ADFS server and 1 load balancer and one different server where we have installed Web Application Proxy service. After installation completed, we are trying to configure WAP by entering ADFS local admin credentials and selecting the SSL certificate we have on ADFS server. It does some processing for 5-6 minutes and at the end it throws below error:

Retrieval of proxy configuration data from the Federation Server using trust certificate with thumbprint '195F5D48CF32AB9A6049ED588E24BEB0D4F30AD2' failed with status code 'InternalServerError'.

Every time we try configure WAP, it generates new ProxyTrust certificate on WAP MMC and throws above error by having new ThumbPrint of new ProxyTrust certificate.

Can someone please help if same scenario might have been faced?