There was no wrongdoing by the France squad before a coronavirus outbreak caused the postponement of their Six Nations match against Scotland, says French federation boss Bernard Laporte.
Head coach Fabien Galthie left the squad's bubble on the opening weekend and players went out to eat waffles in Rome before victory against Italy.
"When they go out with a mask on, to me, there was no wrongdoing, but from now on, it's forbidden," Laporte said.
"Now you can't leave the hotel."
France's game against Scotland is set to be rearranged for Friday, 26 March - six days after the scheduled final day of the Six Nations.
Galthie's side will first play England at Twickenham on 13 March before hosting current leaders Wales in Paris on 20 March.
Galthie provided the squad's first positive test after the 15-13 victory over Ireland in Dublin on 14 February.
Eleven players, including captain Charles Ollivon, have since been diagnosed with Covid-19.
Galthie left the training camp to attend his son's rugby game in Paris on 7 February - the day after the Italy game.
An internal investigation by the France Rugby Federation found that no rules had been broken but Laporte said protocols would become stricter after meeting with French Education, Youth and Sports Minister Jean-Michel Blanquer.
France - who are second in the Six Nations table after winning both their opening games - will gather at their training facility on Sunday before travelling to London.
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