Hi @RSiddiqui ,
Thank you for posting in this community.
If you change the global setting to “Specific people,” it will affect all sites, including existing ones.
People who previously had access to site content via shared links will not lose access immediately. Their existing permissions will remain intact.However, new links generated after the change will adhere to the new permission level (i.e., “Specific people”).
So, existing links will continue to work as before, but any newly created links will follow the updated sharing rules.
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