FIFA says Mohammed bin Hammam has lost his appeal at the Court of Arbitration for Sport against a provisional suspension from football while allegations of bribery and financial mismanagement are investigated.
Bin Hammam challenged rulings by FIFA's judicial bodies to bar him for 90 days. FIFA's ethics judge, Joachim Eckert, extended that suspension last week for another 45 days.
FIFA prosecutor Michael Garcia and the Asian Football Confederation have ordered probes into how the Qatari official managed the regional body's accounts while president.
Garcia is also seeking new evidence that bin Hammam bribed Caribbean voters during his election challenge to FIFA President Sepp Blatter last year.
Bin Hammam's life ban for alleged bribery was lifted by CAS in July.
He claims the FIFA investigations are politically motivated to protect Blatter.