To switch the actively synchronizing Azure AD Connect installation and a staging mode installation, perform these steps on the actively synchronizing Azure AD Connect installation, if this installation is still operable:
- Open the Azure AD Connect Configuration Wizard from the Start Menu or desktop.
- In the Welcome to Azure AD Connect screen, click Configure.
- From the list of Additional Tasks, choose Configure staging mode.
- 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 Configure Staging Mode screen, select the Enable staging mode