Windows return code: 0x21c7, state: 15. Failure to register a SPN might cause integrated authentication to use NTLM instead of Kerberos. This is an informational message. Further action is only required if Kerberos authentication is required by authentication policies and if the SPN has not been manually registered.
I am getting above error whenever I restart my SQL service. I changed it from current service account to local account and was able to connect to SSMS from local machine, but if I am using current service account then this error is coming and in SSMS the error is :
The target principal name is incorrect. Cannot generate SSPI context.
The password is not changed for this service account.