SSPI handshake failed with error code 0x8009030c, state 14 while establishing a connection with integrated security; the connection has been closed. Reason: AcceptSecurityContext failed. The operating system error code indicates the cause of failure. The logon attempt failed

Many times setting up servers you’ll get the following.

SSPI handshake failed with error code 0x8009030c, state 14 while establishing a connection with integrated security; the connection has been closed. Reason: AcceptSecurityContext failed. The operating system error code indicates the cause of failure. The logon attempt failed

A few things to keep in mind.

#1 – Is the SPN set properly on SQL. (Done in AD).

#2 – Is Delegation configured on the application? (Done in AD).

Simply put this error can indicate a kerberos error (remember NTLM cannot do delegation).

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