Apply the default account picture to all users
This policy setting allows an administrator to standardize the account pictures for all users on a system to the default account picture. One application for this
policy setting is to standardize the account pictures to a company logo.
Note: The default account picture is stored at %PROGRAMDATA%\Microsoft\User Account Pictures\user.jpg. The default guest picture is stored at
%PROGRAMDATA%\Microsoft\User Account Pictures\guest.jpg. If the default pictures do not exist, an empty frame is displayed.
If you enable this policy setting, the default user account picture will display for all users on the system with no customization allowed.
If you disable or do not configure this policy setting, users will be able to customize their account pictures.
At least Windows Vista
Not Configured - No registry values are specified.
Disabled - Any values that would be created by the policy in the registry are deleted.
Enabled - Adding, modifying or delete values in the registry.
Apply the default account picture to all users can be found in the Group Policy.
Please navigate to Computer Configuration - Policies - Administrative Templates - Control Panel - User Accounts folder.