How to Share Your Screen on a Mac on the Same Network
To share your screen on a Mac locally, go to System Preferences > Sharing. Then click Screen Sharing and choose All Users. On another Mac, click Go > Connect to Server and paste the VNC address. Finally, enter your username and password.
Note: In order to share your screen with another Mac computer remotely, you (or someone else) will have to allow you access from that computer.
Open the Apple menu on the Mac you want to access remotely. You can do this by clicking the Apple icon in the top-left corner of your screen.
Then select System Preferences.
Next, click Sharing.
Then check the box next to Screen Sharing. You will see this option in the left sidebar.
Choose to allow access for All Users or Only these users. If you select All users, any user in your network can share your screen. If you select Only these users, click the “+” button towards the bottom to add users with whom you can share your screen. You can select users from Users & Groups and Network Users.
Then copy your Mac’s VNC address. This information is under the Screen Sharing: On notification.
On a different Mac, open Finder. This is the half-blue, half-white face icon in your Dock. You can also just click on your desktop.
Then click Go in the Apple Menu Bar. You will see this in the strip at the top of your screen.
Next, select Connect to Server. You can also access this by hitting the Command + K keys on your keyboard at the same time.
Type in the VNC address of the Mac you want to screen share and click Connect.
Note: You can also click Browse to find the other computer on your network easier.
Then choose to sign in as a registered user.
Enter the username and password of the Mac you are trying to access. This is the username and password that you would use to sign in to the Mac that you are connecting to.
Finally, click Sign In.
Note: If you are logged in to both Macs using the same Apple ID, you can begin screen sharing right away. If not, you will need to type in the username and password for the other Mac to begin the screen-sharing session. You can also request permission to share the screen.
To make the most out of your screen sharing sessions, you can change the app’s settings by going to Screen Sharing in the Apple Menu Bar and selecting Preferences. You can also access this by hitting Command + Comma keys on your keyboard.
From here, you can change the size, scrolling options, and quality of your screen sharing. You can also choose to block certain users from screen sharing with you.
You can turn Screen Sharing off by quitting the app or going to System Preferences > Sharing and unchecking the Screen Sharing box.