New York Consolidated Laws, Surrogate's Court Procedure Act - SCP § 1922. Conclusive presumption after 10 years

An action or proceeding to set aside any disposition of the real property of a decedent pursuant to an order granted under this article or under article 13 of the surrogate's court act by reason of lack of jurisdiction over any person interested in the estate or by reason of any other defect in the procedure must be brought within 10 years after the date of the order or within 1 year after the effective date of this article, whichever date is later.  After the lapse of such period the presumption that the order was regular in all respects and that the court had jurisdiction of all persons interested in the estate becomes conclusive.