The error message "server certificate does NOT include an ID which matches the server name" typically occurs when the client (e.g., a web browser, a client application, or a service) attempts to establish a secure HTTPS connection with a server, and the server's SSL/TLS certificate does not contain a Subject Alternative Name (SAN) or a Common Name (CN) that matches the server's hostname.

In SSL/TLS certificate validation, the client checks the certificate to ensure that it is issued for the correct server (matching the server's hostname) to prevent man-in-the-middle attacks and verify the server's identity.

Here are some common reasons for this error and possible solutions:

  1. Incorrect Certificate Configuration: Ensure that the SSL/TLS certificate installed on the server is correctly configured with the appropriate Subject Alternative Name (SAN) or Common Name (CN) that matches the server's hostname (the domain name used to access the server).

  2. Mismatched Server Name: Check that the server's hostname used to access the server matches the one specified in the SSL/TLS certificate. If they do not match, either update the server's hostname or obtain a new SSL/TLS certificate with the correct Subject Alternative Name (SAN) or Common Name (CN).

  3. Missing Wildcard Certificate: If you are using a wildcard SSL/TLS certificate (e.g., *, make sure that it covers all subdomains and the server's hostname you are trying to access.

  4. Expired or Revoked Certificate: Verify that the SSL/TLS certificate is not expired or revoked. Expired or revoked certificates will cause validation errors.

  5. Intermediate Certificate Chain: Ensure that the server is configured to send the full certificate chain, including any necessary intermediate certificates, during the SSL/TLS handshake. Some browsers and clients may require the complete chain to validate the server's certificate properly.

  6. Certificate Authority (CA) Root Certificate: Verify that the client has the correct root certificate of the Certificate Authority (CA) that issued the server's certificate. The client needs the CA root certificate to verify the authenticity of the server's certificate.

If you are the server administrator, check the SSL/TLS certificate configuration on your server to ensure it includes the correct SAN or CN for the server's hostname. If you are a client user, verify that you are accessing the correct server and that the certificate chain is complete.

Always ensure that SSL/TLS certificates are obtained from a trusted and reputable Certificate Authority (CA) to avoid security risks.

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