Login failed for user win-57677d Reason: Account is disabled

1 year ago I installed it everything was working fine until last week
Sage 100C i7 2.00. Just for 2 client machines
I did some research I am asked to log in with the sa account an account created by default which often helps to solve this type of pb but during the installation I had not activated mixed authentication
authentication is done with the Windows account
I have the same message
"Login failed for user win-57677d(which is the machine name)\Administrator. Reason: Account is disabled..."
I followed these two tutorials without success I have the same error message
even in command line I have the same error message

I have attached the error message

I need help please

this message