Though the French protested at the establishment of Fort Oswego, saying the Great Lakes were part of New France, neither Paris nor London wanted a war over a fort in far-away North America, and so the matter rested for the moment. Versailles and Whitehall both agreed to an understanding that the British would not build any more forts on the Great Lakes in exchange for which the French tolerated Fort Oswego. Fort Oswego was a remote frontier post located in the wildness, and in the words of the Canadian historian René Chartrand its "Achilles heel" was its supply lines.
Despite French protests over the establishment of Fort Oswego, claiming it was on their territory, neither Paris nor London wanted a war over a small fort in North America.  They agreed that Britain would not build any more forts on the Great Lakes and in return, the French would tolerate Fort Oswego. The remote post was vulnerable due to its supply lines.