connection failed sql state 28000 sql server error 18452 the user " is not associated with trusted sql connection

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    I have sql 2005 work to program by .net my problem connect by odbc connection to windows authentication but when i do connection to odbc it work but if i close the program then open again it make error like following :

    connection failed sql state 28000 sql server error 18452 the user " is not associated with trusted sql connection

    why it make error

    My sql server 2005 setting information as following

    1-sql server and windows authentication option checked support

    2-when i write connection data i write name :database name server name :ip

    then when it come to account windows authentication it give error message

    3-every time to work the program it must restart server to work again

    4-my server support tcp/ip and named pipe

    and via disabled and all remaining is enabled

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