There are two ATMS in the Palais des congrès de Paris on the -1 level and the 0 level.

Crédit Agricole - Turn right out of the Hotel Concorde la Fayette past Bd Pereire and ATM will be on the left. 82 Avenue des Ternes, 75017 Paris, France

HSBC - Turn right out of the Hotel Concorde la Fayette past Bd Pereire about five blocks and it should be on the left.