In Windows 11, pressing Windows Key + K instantly opens the “Cast” menu, a sidebar that actively scans your local Wi-Fi network for compatible wireless displays, smart TVs, and audio receivers. It allows you to instantly project your screen or audio to a remote device.
While useful in a conference room, this shortcut is a nightmare if you work in a crowded office or apartment building. Accidentally pressing Windows Key + K (which is right next to Windows Key + L for locking your PC) can result in you inadvertently broadcasting your private desktop to a coworker’s presentation screen or a neighbor’s living room TV. If you never intend to wirelessly project your screen, you can disable the shortcut.
How to Disable the Windows Key + K Shortcut
You must use Microsoft’s official PowerToys utility to safely intercept and unbind the shortcut.
- Download and install Microsoft PowerToys from the Microsoft Store or GitHub.
- Launch the PowerToys application from your Start menu.
- In the left-hand navigation sidebar, click on Keyboard Manager.
- Ensure the “Enable Keyboard Manager” toggle switch is turned On.
- Click the Remap a shortcut button in the main window.
- A new configuration window will appear. Click the plus (+) icon to create a new rule.
- Under the “Shortcut” column on the left, click the Type button and press Windows Key + K.
- Under the “Mapped To” column on the right, click the drop-down menu and select Disable from the very top of the list.
- Click OK at the top right of the window.
The projection shortcut is now dead. As long as the PowerToys utility is running in the background, you will never accidentally deploy the Cast menu again, ensuring your desktop remains strictly on your own monitor.