Hello,

This is usually related to SSL handshake failure between the GM and reporting server.

Possible reasons:
1. Many/most cipher suites administratively disabled on the GM
2. TLS protocol versions administratively disabled on the GM
3. HTTPS certificate on the GM with public key size larger than 2048bit preventing java from parsing it.
4. HTTPS certificate on the GM with unsupported signature algorithm such as RSASSA-PSS

I would recommend opening a case with Infoblox support, but you can try collecting the below to confirm if your issue related to any of the above.

1. show ssl_tls_protocols  [From the CLI of GM]
2. show ssl_tls_ciphers  [From the CLI of GM]
3. show log debug /algorithm constraints/  [From the CLI of GM - preferably collected after clicking on the Reporting tab and letting it fail]
4. Download the GM's current HTTPS certificate and review the 'Public key size' and 'Signature Algorithm' in use.

Best Regards,
Bibin Thomas