Final answer:
Win+Shift+C
To open Cortana's Home panel on a Windows operating system, press the Win+Shift+C keys together as long as Cortana is enabled on the system.
Step-by-step explanation:
To open Cortana's Home panel using a keyboard shortcut, you can press the Win+Shift+C keys together.
This shortcut activates Cortana and allows you to use voice commands or type your queries to seek assistance from Cortana.
Remember, this only works if Cortana is enabled and set up on your Windows operating system.
Cortana's Home panel in Windows 10 is:
Win+Shift+C
Please note that keyboard shortcuts can be subject to change with updates to operating systems or software.
If you are using a different version of Windows or if there have been updates since my last knowledge update, it's recommended to check the latest documentation or settings for the specific version you are using.