SID History Migration: Prerequisite Checker

Published January 29th, 2026 by Trevor Taegder

Overview SID History migration is a useful feature for enabling coexistence during an Active Directory domain migration. For instance, if Contoso acquires Fabrikam and migrates Fabrikam users into the Contoso Active Directory domain, SID History allows those migrated users to retain access to resources (such as file shares, printers, and application