SQL Connection with Windows Authentication Mode only

Hello there experts. Does anybody know if it is possible to connect to SQL Server with Windows Authentication Mode only.

Here is my connection string,

adoConnection.ConnectionString :=
'Driver={SQL Server};Server=SampleServer;Database=Sales;Uid=OurDomain\ChessExpert;Pwd=ChessExpertPassword;';

I am getting this error when I execute the connection.
"Login failed for user 'OurDomain\ChessExpert'. The user is not associated with a trusted SQL Server connection."

I hope anybody could give me an example if they have done this before.

Thank you in advance.
ChessExpert