SSPI handshake failed.
Applies to: Microsoft SQL Server 2005.
Event Type: Error
Event Source: MSSQLSERVER
Event Category: (4)
Event ID: 17806
Time: 3:00:01 AM
SSPI handshake failed with error code 0x80090304 while establishing a connection
with integrated security; the connection has been closed. [CLIENT: <ip
In our case the server that is showing the error has the MSSQLSERVER service
running using a domain account that had a password change yesterday. All
client/server applications were up and running, but all jobs started to fail,
and we were unable to connect to the databases on that server using SQL Server
Management Studio, returning an SSPI context error.
Restarting the MSSQLSERVER service with the new credentials was the solution.