Anyway to hide "All" on search page in SharePoint Online site

Murali_Kurva 

I don't think there is any out of the box way to completely hide or delete SharePoint default "All" search vertical on search results page at organization level. But you can manage it at site level: 

However, you can manage search verticals at tenant or site level by following below Microsoft documentation. Check if you can find any way by following this: SharePoint Online - Manage search verticals 

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