Due to a hotkey conflict in a software, the hotkey for Windows input method switching was modified, and the Ctrl+Space hotkey was modified. But when I wanted to change it back, I found that I couldn't change it back no matter what. When setting hotkeys, there is always a Shift that is required, which becomes Ctrl+Shift+Space. So I searched the Internet for a long time and solved this problem.

The steps are as follows:

First, right-click on the input method icon on the taskbar and select the Language Bar in Settings or Area and Language Options in the Control Panel.

Then select the key settings, and select the first "Switch between different input languages" and select left hand ALT under the "Switch input languages" button. Uncheck the check in front of "Switch Keyboard Layout" on the right.

Then enter "Chinese (Simplified) Input Method-Input Method/Non-Input Method Switch" and cancel the check before "Enable Button Sequence". Confirm and exit settings.

Enter Settings again, enter "Switch between different input languages", and check the one on the right. Exit after confirmation.

It perfectly solves the problem that you cannot use Ctrl+Shift and Ctrl+Space to switch input methods.