Analysis Services Component set to 'false'?
Ref:

Grant Server Administrator Permissions (Analysis Services)

You need see what accounts are member of local administrator group and determine if those accounts need the privilege mentioned in the document. If these privileges are required and you set to false you will have issues.


  By default, members of the local Administrators group are also granted
  administrative rights in Analysis Server. Although the local group is
  not explicitly granted membership in the Analysis Services server
  administrator role, local administrators can create databases, add
  users and permissions, and perform any other task allowed to system
  administrators. This behavior is configurable. It is determined by the
  BuiltinAdminsAreServerAdmins server property, which is set to true by
  default. You can change this property in SQL Server Management Studio.


To look at the members of local admin group see this picture:



If not you can set to false. If some of those accounts need certain privilege you can create custom roles and add those accounts as member of those roles. See this article for details: 

Roles and Permissions (Analysis Services)