Delete User Personalization Window
Specifies the pages where you have customized the user interface by using the Customize window. For more information, see Personalize the User Interface.
To reset UI customizations that you have performed on a page, delete the related line in the Delete User Personalization window. For more information, see How to: Cancel UI Personalization.
The Delete User Personalization window only shows information about UI customization that you have performed, under your user logon. To reset UI customizations performed for multiple users, for example as a part of configuring a profile, use the Delete Profile Configuration window. For more information, see How to: Cancel Profile Configuration.