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- Create a dummy extranet space in Confluence
- Assign the internal group (usually confluence-users) to this space as extranet space manager
- Space Tools > Extranet Users > Admins
- Block the URL /communardo/userprofile/indexofpersons.action of the people directory in the "extended restrictions". For that you have to use a feature of the Space Privacy app - the “extended restrictions” configuration.
- Set the mode of the dummy extranet space to "archived".
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