What was one of the main reasons for wanting to change the articles of confederation

Because the government did not have the power to enforce laws or tax the states

on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.