By default, users can add their computer to a homegroup on a home network. If you enable this policy setting, a user on this ...

By default, users can add their computer to a homegroup on a home network.

If you enable this policy setting, a user on this computer will not be able to add this computer to a homegroup.  This setting does not affect other network sharing features.

If you disable or do not configure this policy setting, a user can add this computer to a homegroup.  However, data on a domain-joined computer is not shared with the homegroup.

This policy setting is not configured by default.

You must restart the computer for this policy setting to take effect.