An Azure relational database service.
I also made a connection in SSMS and confirmed that the connection failed.
In addition, the firewall settings are set to allow communication to port 1433.
In case unconnnected, changing the AzureDB core CPU settings and I'll be able to connect after reconfiguring the database.
Therefore, I supporse that it is not due to improper firewall settings.
Based on the above, do you have any idea what causes the connection to fail?