SSPI handshake failed with error code 0x8009030c, state 14 DESCRIPTION:    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.  [CLIENT: 10.XXX.XX.XX} ***The client address is different on different occasion

Can i refer this problem to my network admin? is this a network issue or a sql server issue. Is there any other way other then changing the registry ? Can i safely ignore this error ?
WORKAROUND/SOLUTION
Loopback check can be removed by adding a registry entry as follows:

Edit the registry using regedit. (Start –> Run > Regedit )
Navigate to: HKLM\System\CurrentControlSet\Control\LSA
Add a DWORD value called “DisableLoopbackCheck”
Set this value to 1