The Court of Arbitration for Sport rejected an appeal of a six-year ban for unethical conduct against former FIFA president Sepp Blatter.
He will remain banned from taking part in any football-related activity for six years.
Blatter was accused of authorizing a $2 million payment to former UEFA president Michel Platini in 2011. Blatter has denied wrongdoing and said he would accept whatever punishment the CAS handed out.
Blatter, who was FIFA's boss for 17 years before resigning in 2015, has said the payment was made for consultancy work.
In its ruling, the CAS said that Blatter unlawfully awarded contributions to Platini under the FIFA Executive Committee retirement scheme "which also amounted to an undue gift.