The error message you are encountering, "The SSL connection could not be established, see inner exception," typically indicates that there is an issue with the SSL/TLS certificate validation during the connection process. This can occur for a couple of reasons:
- Untrusted Certificate: The root CA of the service's server certificate may not be trusted on the machine where the self-hosted integration runtime (SHIR) is installed. Ensure that the service's server certificate and its certificate chain are trusted by the machine.
- Proxy Issues: If you are using a proxy, it might be replacing the server's SSL certificate with its own, which may not be trusted by your machine. In this case, you can either trust the replaced root CA on the SHIR machine or configure the proxy not to replace the service's server certificate.
To resolve this issue, you can check the server certificate by opening the service URL in your browser and viewing the server certificate information. Additionally, ensure that the DigiCert Global Root G2 is in the trusted root CA list on your machine, as it is the new SSL certificate being used.
If the problem persists, you may need to consult your network team to troubleshoot any potential network settings or firewall rules that could be affecting the connection.