Microsoft Entra ID Password Writeback drawbacks?

Question

Hi,

We have a client that has a licensing feature that will allow password write back. My question is, are there any drawbacks if we will implement it, alongside SSPR?

Appreciate your comments!

Answer 1

Hey Christian, implementing Password Writeback alongside SSPR is a solid way to give users full self-service password reset capabilities both in the cloud and on-premises. That said, there are a few “gotchas” and added overhead you’ll want to account for:

1. Licensing and cost • Password Writeback is a premium feature – you’ll need Microsoft Entra ID P1/P2, EMS or SPE licenses for on-premises users (O365 paid SKUs or Entra Basic for cloud-only). • Every user who can reset or write back needs a valid license.
2. Infrastructure, connectivity & firewall rules • You must run Azure AD Connect (1.1.443+) or cloud sync agents and point them at a PDC emulator in each forest. • Outbound HTTPS needs to be whitelisted to passwordreset.microsoftonline.com and servicebus.windows.net. • Idle connections must remain open 2–3 minutes for the service bus relay to work reliably.
3. Additional operational overhead • You’ll need to monitor Azure AD Connect health, ensure full imports/syncs occur before testing writeback, and periodically upgrade agents. • Troubleshooting can be trickier—if writeback fails you’ll dig into event logs, network traces and service bus diagnostics.
4. Supported topologies & versions • Only Windows Server 2008 R2, 2012, 2012 R2, 2016, 2019 (latest service packs) are supported on-prem. • Multi-forest or complex AD layouts require extra connector configuration (only use preferred domain controllers).
5. Latency & failure scenarios • Writeback isn’t instant if your on-prem agent is down or connectivity blips—the message lives in the service bus for a few minutes before timing out. • If your on-prem password policy is stricter than cloud, some resets that pass SSPR may still be rejected by AD DS.

All of that being said, many organizations run SSPR + Password Writeback successfully—just plan for the extra licensing, configuration and monitoring. Hope it helps!

Reference list

1. Licensing requirements for SSPR & Password Writeback https://docs.microsoft.com/azure/active-directory/active-directory-passwords-licensing
2. How Self-Service Password Reset Writeback Works (security & flow) https://learn.microsoft.com/entra/identity/authentication/concept-sspr-writeback
3. Azure AD Connect sync operations & Preferred DC setup https://docs.microsoft.com/azure/active-directory/connect/active-directory-aadconnectsync-operations
4. Troubleshoot Password Writeback https://docs.microsoft.com/azure/active-directory/active-directory-passwords-troubleshoot

Let us know if you need any further assistance

Answer 2

Enabling Password Writeback alongside SSPR in a hybrid environment using Microsoft Entra ID and on-premises Active Directory (via Azure AD Connect) generally improves user experience and reduces helpdesk load by ensuring passwords reset in the cloud sync back to on-prem systems, but the main drawbacks arise if it is poorly secured—weak SSPR authentication methods, lack of MFA, or improper monitoring can create a direct attack path into on-prem AD; additionally, misaligned password policies, aggressive lockout settings, dependency on Azure AD Connect availability, and inclusion of privileged (Tier 0) accounts in SSPR can introduce operational or security risks, so with strong MFA enforcement, proper exclusions for admin accounts, aligned policies, and monitoring, the feature is typically considered secure and recommended in mature hybrid environments.