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#1
I think your Cortana has not been enabled or has been disabled.
If Cortana is enabled, the search box should say Ask me anything, not search the Web and Windows.
How to Enable or Disable Cortana in Windows 10
https://www.tenforums.com/tutorials/2...dows-10-a.html
You said " since yesterday..............", please do a system restore. Pick a date that is at least 3 days ago as your restore point.
System Restore Windows 10
Yes cortana is disabled but it was disabled from the moment i install windows 10 ,but i was able to see popular news in search box...
I will do system restore ,just to ask does this can be the problem with bing because i get message : It's not you, it's us ,when i am trying to open web search history settings?
Edit: I mean i disable cortana after i install windows 10
Sorry.
I am out of ideas, unless you don't mind doing a Repair Install, also known as In-place Install.
Repair Install Windows 10 with an In-place Upgrade
Right now i am out of space ,all of my 3 hard partitions have less than 5 GB and my four 2TB external drives share the same fate so this is not the option for me right now but i will try it when i find some space :)