Hello,
I have gone through couple of posts regarding this issue but couldn't get the right solution. Could you please help what exactly we are missing here.
Details:
1) we have two SQL instances on one standalone machine (Default Instance (2008 SP3) + Named Instance (SQL 2012 SP1))
2) Both instances are configured to accept SQL+ Windows authentication.
3) when we give access to our users they are getting following exception if they connect with 'windows authentication'. (For both instances)
Login failed. The login is from an untrusted domain and cannot be used with Windows authentication.
Note: (Being a sys + windows admin I'm able to connect both the instances from same client machine without any issues)
4) Also, we observed following error in windows application event log,
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 Windows error code indicates the cause of failure. The logon attempt failed [CLIENT: 192.168.xxx.xyx]
5) If we create SQL login it is working fine without any issues.
Could someone guide/help me identifying and fixing this issue.
Thank you