Microsoft SharePoint Products & Տեխնոլոգիաներ

If the search center URL is empty you would be able to set it up in Search Administration Page on Central Admin.

Once you set the value you don’t have the interface to change this value.

Use PowerShell to change the URL

$search = $search = Get-SPEnterpriseSearchServiceApplication

$search.SearchCenterURL = <<URL>>

$search.Update();