Screens offers a few ways to share a remote user's active session, enabling you to see the user's desktop and activities and take control to assist with productivity or problem-solving.
Sharing a Session as a Guest User
You can share a session with a logged-in user by using the macOS Guest account. This method does not require the credentials for an existing user account on the remote Mac, but it does require a logged-in user to accept your Screen Sharing request.
- In the remote Mac’s System Preferences, click Sharing.
- Select either Screen Sharing or Remote Management, depending on your chosen configuration.
- Click Computer Settings and enable Anyone may request permission to control screen.
- In Screens Preferences, click the Macintosh tab.
- Enable Prompt for Screen Sharing.
- Connect to the remote Mac.
- Select Ask to Share Screen.
- The user on the remote Mac must accept your Screen Sharing request.
The remote user may deny your request, of course, resulting in a connection error.
Sharing a Session with a Logged-In User
If a user is logged into his macOS user account on the remote machine when Screens establishes a connection, Screens will prompt for a decision.
- Ask for permission to share display: Prompts the remote user for permission to share his session with you.
- Log in as yourself: Logs in and starts a background session with your own desktop, settings, etc.
Sharing a Session as an Administrator
If you have an existing Administrator account on the remote computer, you may connect directly to any active session without prompting logged-in users for permission or confirmation. This requires that Remote Management be enabled instead of Screen Sharing on the remote computer. For more information, see Configuring macOS for Remote Access.