Password writeback vs password hash sync. Apr 4, 2025 · In this post I will show you h...
Password writeback vs password hash sync. Apr 4, 2025 · In this post I will show you how to enable and configure password writeback in your Azure AD hybrid environment. What writeback allows you to do is to sync the password from Entra ID to on-premises Active Directory but only after the user changes it, for example using password reset (SSPR). When users change or reset their passwords using SSPR in the cloud, the updated passwords also written back to the on-premises AD DS environment. Pw writeback is used by users mostly as in, Ad is the source thus the onprem pw too, you use pw writeback to allow your users to reset their pw and unlock their account via sspr portal, w/o pw writeback Back to Blog Microsoft 365 for Beginners – Password hash Synchronization vs Pass-through Authentication – Part 33 When working with Azure Active Directory and looking at different password sync technologies, two generally come up in Azure AD Connect configurations: Password Hash Synchronization and Pass-Through Authentication. However, pass-through authentication certainly has its own benefits, especially for organizations that are prevented from synchronizing and storing password hashes in the cloud. Jan 4, 2024 · It can be enabled with password hash synchronization (PHS) meaning that a cloud password change is first written back (as a hash) to on-premises AD and then forwarded (as a hash of a hash) to the cloud. Dec 5, 2024 · When an organization uses Microsoft Entra Connect (formerly Azure AD Connect) with Password Writeback enabled, the synchronization between on-premises AD and Microsoft 365 means that account lockout policies can be enforced across both environments. Apr 9, 2025 · Password hash synchronization synchronizes the password hash in Active Directory to Microsoft Entra ID. May 2, 2025 · What Do They Have in Common Both tools cover the basics of identity synchronization. Since these Oct 25, 2025 · Password writeback allows password changes in the cloud to be written back to an on-premises directory in real time by using either Microsoft Entra Connect or Microsoft Entra Connect cloud sync. Since it uses your on-premises Active Directory as the authority, you can also use your own password policy. Well this is why you use aad connect with password hash sync or pass through so the users have same credentials in cloud and onprem app. Password hash synchronization is generally the more adopted solution of the two. By enabling password writeback feature you can synchronize password changes in Azure Active Directory back to your on-premises Active Directory environment. Here’s what they both offer: Single and Multiple AD forests Sync users, groups, and contacts Password hash synchronization Filtering by OU or group Attribute filtering (Cloud Sync is a bit limited) Password writeback Seamless Single Sign-On Exchange Hybrid . The end-user can use the same password on-premises and in the cloud but only manage it in one location. It implements Password Hash Synchronization for user sign-in and Password Writeback to synchronize password changes from Microsoft Entra ID back to on-premises AD DS, ensuring a unified credential experience. Oct 25, 2025 · If the user's password hash is synchronized to Microsoft Entra ID by using password hash synchronization, there's a chance that the on-premises password policy is weaker than the cloud password policy.