Perform these steps on the Windows Server running Azure AD Connect:
- Open the Azure AD Connect Configuration Wizard from the start menu or desktop.
- In the Welcome to Azure AD Connect screen, click Configure.
- In the Additional tasks screen, select the Configure device options ribbon.
- Click Next.
- On the Overview screen, click Next.
- On the Connect to Azure AD screen, sign in with an Azure AD-based account with Global administrator or Company administrator privileges. Perform multi-factor authentication and/or privileged identity management to connect.
- On the Device options screen, select Configure device writeback.
- Click Next.
- On the Writeback forest screen, select the on-premises device writeback forest from the drop-down lists: ...