This short blog shows you one of the ways to resolve the error “The SSL certificate is signed by an unknown certificate authority”.
When I tried to do a deployment from Visual Studio Release Management to Windows Azure then I got the error:
The server certificate on the destination computer (callcenter-prod.cloudapp.net:5986) has the following errors: The SSL certificate is signed by an unknown certificate authority.
Your machine name could be different but most likely your port will be 5986 if you did not change it.
You can see my picture below has two successes that is because I have resolve the error or else the second row for the deployment will failed.
In order to resolve this I can only use Google Chrome to get the certificate from my Windows Azure VM and install it in Trusted Root Certification Authorities of the server you are running the Release Management tool.
For this example, open your google chrome browser https://callcenter-prod.cloudapp.net:5986. Click on the Padlock icon then the certificate will drop down. Save the certificate and install it as in the reference link.