The Court of Cassation, France's highest court, on Wednesday confirmed the conviction of former President Nicolas Sarkozy for corruption and illegal influence.
Sarkozy had appealed against his 2021 conviction for corruption and illegal influence, where he was given a three-year prison sentence.
Two of those years were suspended, while for the final year Sarkozy would wear an electronic bracelet instead of going to prison.
Sarkozy's lawyer, Patrick Spinozzi, said the former French president will now appeal to the European Court of Human Rights.
Sarkozy, a conservative who remains a prominent figure in French politics even after leaving office in 2012, was found guilty by a lower court of trying to bribe a judge and exerting illegal influence in exchange for confidential information related to an investigation into his 2007 campaign finances.
The court found that Sarkozy had conspired to secure a job in Monaco for a judge in exchange for inside information on an investigation into allegations that he had accepted illegal payments from L'Oreal heiress Liliane Bettencourt.
The judge, Gilbert Azibert, was also found guilty of corruption and undue influence.
Sarkozy is expected to stand trial next year on charges of corruption and illegal financing related to alleged Libyan financing of his successful 2007 presidential campaign.
Sarkozy denies all charges.
If found guilty in the Libyan case, Sarkozy could face up to 10 years in prison.
Sarkozy's predecessor, Jacques Chirac, also a conservative, is the only other president in modern French history to be convicted by a court. Chirac was found guilty of corruption in 2011, four years after leaving office.