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

: A time difference of more than 5 minutes between the client, server, and Domain Controller can break Kerberos tickets.

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

Fix "Cannot generate SSPI context" Error in SQL Server - Microsoft Learn : A time difference of more than 5

: This official tool from Microsoft Learn can scan your SQL instance and automatically identify missing or misconfigured 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. : If the client resolves the server's IP

: Check which account is running the SQL Server service. If it's a domain account, ensure the SPN is registered specifically to that account using the command setspn -L .

The error message typically signals a failure in Kerberos authentication between a client and a SQL Server. It usually means the client cannot verify the identity of the server because of a mismatch or issue with the Service Principal Name (SPN) . Common Root Causes The error message typically signals a failure in

: 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 ).