This is due to an issue Apple had to solve a while ago, wherein users who switched to an Android, or other non-iPhone smartphone, were missing texts from friends who were sending iMessages. How to how to print screen on mac keyboard Set up/Activate and Use iMessage on iPhone and iPad. The main difference comes from the inside. Attached is the cmd-shift-4 screen cap of the RDP session showing 'Greenshot' just after it was invoked thru the RDP session via F13 from the Mac's wireless keyboard (I emailed the Mac screen cap to the work PC). Greenshot's defaults are set to use the PC's print-screen key.

Mac Wireless Keyboard Print Screen

How to take a screenshot on your Mac

1. To take a screenshot, press and hold these three keys together: Shift, Command, and 3.
2. If you see a thumbnail in the corner of your screen, click it to edit the screenshot. Or wait for the screenshot to save to your desktop.
   

How to capture a portion of the screen

How To Print Screen On Apple 6

1. Press and hold these three keys together: Shift, Command, and 4.
2. Drag the crosshair to select the area of the screen to capture. To move the selection, press and hold Space bar while dragging. To cancel taking the screenshot, press the Esc (Escape) key.
   
3. To take the screenshot, release your mouse or trackpad button.
4. If you see a thumbnail in the corner of your screen, click it to edit the screenshot. Or wait for the screenshot to save to your desktop.

How to capture a window or menu

1. Open the window or menu that you want to capture.
2. Press and hold these keys together: Shift, Command, 4, and Space bar. The pointer changes to a camera icon . To cancel taking the screenshot, press the Esc (Escape) key.
   
3. Click the window or menu to capture it. To exclude the window's shadow from the screenshot, press and hold the Option key while you click.
4. If you see a thumbnail in the corner of your screen, click it to edit the screenshot. Or wait for the screenshot to save to your desktop.

Where to find screenshots

By default, screenshots save to your desktop with the name ”Screen Shot [date] at [time].png.”

Mac Keyboard Shortcut For Print Screen

In macOS Mojave or later, you can change the default location of saved screenshots from the Options menu in the Screenshot app. You can also drag the thumbnail to a folder or document.

Learn more

Print Screen Apple Keyboard Windows

• In macOS Mojave or later, you can also set a timer and choose where screenshots are saved with the Screenshot app. To open the app, press and hold these three keys together: Shift, Command, and 5. Learn more about the Screenshot app.
• Some apps, such as the Apple TV app, might not let you take screenshots of their windows.
• To copy a screenshot to the Clipboard, press and hold the Control key while you take the screenshot. You can then paste the screenshot somewhere else. Or use Universal Clipboard to paste it on another Apple device.