The-target-principal-name-is-incorrect-cannot-generate-sspi-context -

: Recent changes to service accounts or SPNs may not have replicated across all domain controllers yet. Recommended Troubleshooting Steps

: Try connecting using the server's IP address. If it works, the issue is almost certainly related to SPN or DNS resolution, as IP connections often fall back to NTLM authentication instead of Kerberos. AI responses may include mistakes. Learn more : Recent changes to service accounts or SPNs

: If the client resolves the server's IP address to a different name than what is stored in Active Directory, the Kerberos ticket request will fail. AI responses may include mistakes

: The SPN might be missing, duplicated, or registered to the wrong service account (e.g., registered to a domain user when the service is running as LocalSystem ). : This official tool from Microsoft Learn can

: This official tool from Microsoft Learn can scan your SQL instance and automatically identify missing or misconfigured SPNs.

: Run setspn -X to search for any duplicate SPNs in your domain, which often causes this specific error.