Forum Discussion
Guest Users Invite - Sharing on this site is disable by owners
Members of a site are not able to invite guests with below settings Org and Site Collection Level Sharing - New and Existing Guests Site Sharing Settings - Site Owners and Members can share f...
What settings do you have when you click in the "Change how members can share" link available in the site permissions panel? It might happen someone (an owner) just enabled the option "Only site owners can share files, folders and the site" causing the behavior you are seeing
jcgonzalezmartin - The settings allow members to share, below screenshot for your reference. and the user who is inviting guests is added under site members group.