The search box in outlook 2016 disappeared. how and where to look for it?

Question

Outlook

Today at work I ran into one problem, all users lost the "search" line in outlook. example in the picture.

Answer 1

I have a window appeared after I. I clicked on sms and clicked find related messages and immediately appeared

Answer 2

On one of the four machines with the same problem, search fixed itself, according to the user. Despite the fact that the user did not take any action to correct the situation

Answer 3

Good afternoon! I solved the problem in this way:
1) In outlook, in the parameters, I went into the search, there are indexing parameters, and then when I clicked on the change button, I had 2 indexing links to the same data file. As far as I understood, there were tails with the previous version of outlook (the icons were slightly different from each other), after which I unchecked one of the versions of outlook, from the old one, judging by the icon. After I closed outlook
2) I looked that the outlook process was not hanging in the processes and then found where the data file was and checked the attributes: "allow indexing the contents of this file in addition to the file properties"
And lo and behold, after opening outlook, the search bar reappeared.
Hope it helps someone :)