this video go over how to resolve the certificate error "the underlying connection was closed: could not establish trust relationship for the SSL/TLS secure channel.
This error is because the certificates is expired, this video shows you how to resolve this error by replacing the expired certificate.
If my answer helped you today, please give my post a like and be sure to mark the 'Accept Solution' button to help others find the answer!
Cheers
Levon Lyons
