When I opened my system my search bar goes white. I tried to fix it, sometimes it works but goes back to grey till I type in the search bar then goes white again
I have tried below thing
Settings > Time and Language > Region and Language. Change your Country to India
then Sign out
Sing back. The Cortana search box not appears it seemed as Cortana search box is not available in India.
Again go back to settings and change your country as previous. The Cortana search box comes back but now at this time, it will be black instead of its white color. This does not work in 1709