@Sandeep Kumar Noolu You can enable Password Hash Synchronization (PHS) as backup option for both Pass Through Authentication (PTA) and Federated Authentication by performing below steps:
- Run the Azure AD Connect wizard on your AD Connect server.
- Click on Customize synchronization options and connect to Azure AD using Global Administrator credentials.
- On the Optional Features page, you need to select the checkbox for Password Hash Synchronization to enable it as backup option.
Note: Your primary sign-in method would be the one selected under User Sign-in page. If primary sign-in method fails, you will not automatically fallback to Password Hash Synchronization. You would need to manually change the primary sign-in method to Password Hash Synchronization in that case.
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