To enable password writeback in Azure AD Connect, we have to take the following steps:

1. Log in to your on-premises domain controller using Remote Desktop (RDP) and start the Azure AD Connect wizard again.

2. On the Welcome to Azure AD Connect page, select Configure as follows:

3. In the Additional tasks screen, select Customize synchronization options, and then select Next as follows:

4. Provide Azure AD global administrator credentials and then select Next as follows:

5. On the Connect your directories screen, select Next as follows:

6. On the Domain/OU Filtering screen, select Next again, as follows:

7. On the Optional features screen, select the box next to Password writeback and then select Next as follows:

8. On the Ready to configure page, select Configure.
9. When the configuration is finished, select Exit.

We have now enabled password writeback on the domain controller. In the next section, we are going to enable it in the Azure portal as well.