Password hash synchronization (PHS)

Concept

Password hash synchronization is a hybrid identity sign-in method that syncs protected hashes of on-premises Active Directory passwords to Microsoft Entra ID, so users can sign in to cloud services with the same password without the readable password being sent to the cloud.

Title graphic: Password hash synchronization (PHS) (Concept)

Type	Concept
Documentation	learn.microsoft.com/en-us/entra/identity/hybrid/connect/whatis-phs

Episodes about Password hash synchronization (PHS)

Microsoft Entra Cloud Sync - Simply Explained

2026-08-15 · Video on YouTube

Many organizations still keep identities in on-premises Active Directory while their people work in Microsoft 365. This knowledge nugget helps identity admins understand Microsoft Entra Cloud Sync, how it differs from Entra Connect, what changed in 2026, and…

Articles about Password hash synchronization (PHS) (2)

Password Hash Synchronization vs Pass-Through Authentication: Choosing the Right Hybrid Identity Method
2026-08-15 · Mirko Peters
Compare Password Hash Synchronization and Pass-Through Authentication in Microsoft Entra Connect. Choose the right hybrid identity method for your organization.
Password Hash Sync Vs PTA Guide
2026-04-30 · Mirko Peters
Learn Password Hash Sync vs PTA with practical guidance on setup, architecture, security, governance, and real-world use.

Glossary

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Sources

Documentation: learn.microsoft.com/en-us/entra/identity/hybrid/connect/whatis-phs
Feed for this topic (RSS): entity/password-hash-synchronization/feed.xml
M365.FM episodes on this topic: 1
Articles on this topic: 2

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03