Alert! Theres a lot of SharePoint online tenants (Office365) where external users can reshare, because the default setting is that they are allowed to do so. A simple PowerShell commandlet run by the SPO admin revert this setting:

PS>Connect-SPOService -url https://"mytenant"
set-spotenant -PreventExternalUsersFromResharing $true


by Thorbjørn Værp on Mar 27, 2017 at 5:05 PM


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