The error message "Failed to validate the server name in a certificate during Secure Sockets Layer (SSL) initialization" indicates that there was a failure in validating the server name in a certificate during the initialization of the Secure Sockets Layer (SSL) protocol. SSL is a security protocol used to establish secure and encrypted connections between a client and a server.
When a client attempts to establish a secure connection using SSL, it verifies the authenticity of the server through a digital certificate. This certificate contains information such as the server name and the public key used to encrypt the communication. During the SSL initialization process, the client checks if the server name in the certificate matches the server name it is trying to connect to.
If the server name in the certificate does not match the server name being connected to, the "Failed to validate the server name in a certificate during SSL initialization" error occurs. This can happen due to several reasons, including:
1. The server name in the certificate does not exactly match the server name being connected to. It's important to note that SSL is case-sensitive, so even a difference in capitalization can cause the error.
2. The certificate used by the server is invalid or not trusted. This can occur if the certificate has expired, been revoked, or if the certificate authority is not recognized as trusted by the client.
3. There may be an issue with the domain name configuration on the server or the client. If the server is configured with an incorrect domain name or if the client is attempting to access the server using a different domain name than what is in the certificate, the error will occur.
To resolve this issue, you can consider taking the following actions:
1. Verify that the server name you are trying to connect to matches exactly with the server name in the certificate. Ensure there are no spelling errors, capitalization differences, or incorrect domain names.
2. Check the validity and trustworthiness of the certificate. Ensure that the certificate has not expired, has not been revoked, and that the certificate authority is recognized as trusted by the client.
3. Verify the domain name configuration on both the server and the client. Ensure that the server is configured with the correct domain name and that the client is using the correct domain name to connect to the server.
To resolve this issue, for example, using JDBC, the customer should ensure that the server name being connected to matches exactly with the name in the certificate. In this case, it is recommended to use *.virtualcluster.database.windows.net as the hostNameInCertificate value to allow for wildcard matching and accommodate different subdomains under virtualcluster.database.windows.net. By aligning the server name and the hostNameInCertificate value, the SSL validation will be successful and the connection can be established without encountering the "Failed to validate the server name in a certificate during SSL initialization" error.
at com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:3151)
at com.microsoft.sqlserver.jdbc.TDSChannel.enableSSL(IOBuffer.java:1912)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2708)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:2362)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:2213)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1276)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:861)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at testconnectionms.SQLTest.main(SQLTest.java:57)
Caused by: javax.net.ssl.SSLHandshakeException: Failed to validate the server name in a certificate during Secure Sockets Layer (SSL) initialization.
Microsoft
