Fix for “The target principal name is incorrect. Cannot generate SSPI context.”

After changing a service account running SQL server, I get an error when I connect to SQL server from Management Studio from my laptop or other servers. The error is below.

“The target principal name is incorrect.  Cannot generate SSPI context.”

To Fix this,

You need to register the service account in SPN.

MSSQLSvc/ Server1.domain.us.dom Domain\ServiceAccount

MSSQLSvc/ Server1.domain.us.dom:1433 Domain\ServiceAccount

After SPN is registered successful, the error is resolved. Thank you.