The daily newspaper Le Monde wrote: "To affirm ... that it was crowned (in Cannes) for its cinemagraphic qualities is either proof of incompetence, a pure lie or a cynical joke."
Le Monde said the film more closely resembles propaganda, and it carried a separate article to separate "truths" from "errors" in the film.
Moore, in an interview with Liberation, said the movie "presents my own version of the facts."
Even less kind was France's superstar philosopher, Bernard-Henri Levy, who dismissed "Fahrenheit 9/11" as dishonest.
"When Michael Moore describes Iraq, before the American intervention, as a sort of oasis of peace and happiness, where people flew kites .... there wasn't only that," Levy said on RTL radio.
Levy noted that he opposed the war and considers Bush a "catastrophe for America." But, he added: "Saddam Hussein was also a horrible dictator. And that is not in the film of Michael Moore."