On Windows 10, starting with version 1809 (October 2018 Update), the Screen Sketch app has been repurposed to become the new default experience to take screenshots.
Although, you can simply open Screen Sketch, or use the Screen snip button in Action Center, to quickly take a screenshot of an app or game, it’s possible to adjust the settings to use the Print Screen button to open the screen snipping experience reducing the steps to a single click.
How to take screenshots using Print Screen key
To open the screen snipping tools to quickly, use these steps:
Click on Ease of Access.
Click on Keyboard.
Under “Print Screen shortcut,” turn on the Use the PrtScn button to open screen snipping toggle switch.
Once you’ve completed the steps, if you have another application currently mapped to use the Print Screen button, you may need to restart your device to apply the settings.
After the changes have been applied, you can simply press the PrtScr key on your keyboard to bring up the tools to take a clip or full screen capture of anything that you’re running in the desktop.
If you don’t see this option, it’s likely because you’re not running the version of Windows 10 that supports the feature. Screen Sketch as the default app to take screenshots is available starting with version 1809 and later.