Every day I am finding the following message in Sql Server Log in management studio.

Source = Logon
Message = login in failed for MOC\FSSPACCOUNT REASON TOKEN BASED SERVER ACCESS VALIDATION FAILED WITH AN INFRASTRUCTURE ERROR
CLIENT 179.20.1.44

What could be the possible reasons and how to stop the login from failing?  

Every day I am finding the following message in Sql Server Log in management studio.

Source = Logon
Message = login in failed for MOC\FSSPACCOUNT REASON TOKEN BASED SERVER ACCESS VALIDATION FAILED WITH AN INFRASTRUCTURE ERROR
CLIENT 179.20.1.44

What could be the possible reasons and how to stop the login from failing?  

See below discussion

http://social.msdn.microsoft.com/Forums/sqlserver/en-US/c3e0713c-b4e6-400e-9ba2-448cd5bf3cb8/tokenbased-server-access-validation-failed-with-an-infrastructure-error?forum=sqlsecurity

this due to windows security feature : User Access Control is blocking MOC\FSSPACCOUNT to login   to the SQL Instance

Please check below link

http://www.sqldbops.com/2010/05/token-based-server-access-validation.html