In some stories, the conflict is never resolved and the story ends with an impasse.
E.g. the teenagers keep fighting against overwhelming odds and we know they will probably never win, the displaced child never full adjusts to their new home and we feel sad that they will continue to struggle.
However, an unresolved conflict doesn't mean nothing happens in the story. A lot can happen in a story that ends with the characters and/or readers realising the conflict can't be resolved—and that recognition of the impasse becomes the point of the story.