Many Windows 10 users, especially after a Windows update, cannot type in the File Explorer's search bar or in Cortana's search bar on the taskbar, because they cannot click on the search box to start typing.
Run CTF Loader (ctfmon.exe).
The CTF Loader (ctfmon.exe), is a legitimate Windows process (ctfmon.exe), which controls the User Input and the Language bar. In some cases, the 'ctfmon.exe' process may not function properly and must be started again. To restart, the CTF Loader (ctfmon.exe) process:
1. Simultaneously press the Windows image + R keys to open run command box.
2. In run command box, copy paste the below command and press Enter:
C:\Windows\system32\ctfmon.exe