Shan,

          Did you, by any chance, use voice dictation on that last message.  It reads "ship in the control key," which I take to mean SHIFT and the CTRL, but I'm wondering if you actually meant SHIFT+ALT?


WinKey+Spacebar appears to be the default, see:  https://www.windowscentral.com/how-change-your-keyboard-layout-windows-10 and is the option documented on the keyboard shortcuts page for Windows 10:  https://support.microsoft.com/en-us/help/12445/windows-keyboard-shortcuts 
It also seems that SHIFT+ALT will work, see:  https://answers.microsoft.com/en-us/windows/forum/windows_10-desktop/windows-10-keyboard-switch-language/f6473ac0-2006-4a51-aabe-124f4f1b3507

          You can, of course, change the default, though and you have to have more than one language defined for the system to allow switching.  I just haven't been able to find SHIFT+CTRL documented as an alternative.

--

Brian - Windows 10 Home, 64-Bit, Version 1803, Build 17134  

     Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts. Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.

         ~ Mark Twain