Tag: Hybrid Identity

Change Users UPN with PowerShell

Configure your on-premises Active Directory UPNs before syncing to Office 365. Add an alternative UPN suffix in AD Domains and Trusts, then bulk-change every user's UPN with Get-ADForest / Set-ADForest and Get-ADUser / Set-ADUser - either across the whole forest or scoped to a single OU. Verification commands included.

Configure Active Directory to Support Additional Domain Names

Add an alternative UPN suffix to your AD forest so users can sign in as user@infotechninja.com without renaming the domain. Walks the optional internal DNS zone, the AD Domains and Trusts registration, the per-user assignment, and the Microsoft 365 hybrid pre-flight (domain verification, UPN audit, sign-in mode). Includes the Set-ADForest / Set-ADUser PowerShell equivalents and the common mistakes (wrong right-click, suffix vs email, forgetting public DNS validation).