French president Emmanuel Macron (Front R) attends an inauguration ceremony at the Elysee Palace in Paris, France, on May 14, 2017.
Following the talks, President of the Constitutional Council Laurent Fabius announced the final results of presidential elections and Macron officially assumed the office.
Prior to the inauguration, Macron took part in a private one-on-one meeting with outgoing Socialist President Francois Hollande.
New members are flocking to French President-elect Emmanuel Macron's party as it prepares for the elections to the National Assembly next month - starting with a change in its name.
Macron, 39, had been Hollande's top economy adviser from 2012 to 2014, then became his economy minister until previous year, when he chose to quit the Socialist government and launch his independent presidential bid.
The year-old political movement "Republique en Marche" (Republic on the Move, REM) that he formed to launch his presidential bid intends to field candidates in virtually every constituency in the country.
Her three children were also present along with VIPs from France's political scene and the young team of close advisors behind Macron's sensational rise.
A 21 gun salute at the Esplanade des Invalides behind the Eiffel Tower after he takes power will mark at least a pause in the anti-globalization trend that brought Donald Trump the US presidency and led British voters to pick a future outside the European Union.
In his speech, Macron said he would restore France's global standing.
France, he maintained, was buffeted by world trends and changes, but said he would do everything to "convince French people they have inside of them all the resources to count among the first-ranking nations" in the world.
At the Elysee Palace in Paris, the ceremony of inauguration of the 25th President.
A former economy minister with pro-business, pro-European views, he is the first French president who does not originate from one of the country's two mainstream parties.
Mr Macron is seeking a majority of lawmakers so he can pass his programs.
Mr Macron is the youngest president in the country's history and the 8th president of France's Fifth Republic, created in 1958.
The address came after he walked down the red carpet at the entrance to the palace to be received by Hollande, who launched Macron's career by appointing the ex-investment banker as an economic adviser, then elevating him to the economy ministry. Aides went out of their way to emphasise that the dark suit he wore cost about 450 euros or just under $500, and that the lavender outfit worn by his wife Brigitte had been loaned by fashion house Louis Vuitton.
The 39-year-old President has promised to breathe new life into French politics and kick start the country's sluggish economy, CNN reported.