Moshiach ben Yosef is past

At the farbrengen of parshas Vayishlach 5718, the Rebbe spoke extensively in the maamor about Moshiach ben Yosef. Several of the elder chassidim seemed to be worried by the Rebbe's words, that they seemed to imply that there was still a need to endure the period of Moshiach ben Yosef.

The Rebbe responded to this concern as follows: Since Rav Chayim Vital said about himself that he is Moshiach ben Yosef, "then we've already passed Moshiach ben Yosef".
("איז מיט משיח בן יוסף איז מען שוין אפגעקומען")

(as told by Shmuel M.M. Shneursohn)