I need to grant a person the access to all restricted files/folders on the site or site collection without adding the person as one of the site collection Admin or site owner.
I tried to give the person the Full control access, but it is not working, he is still not able to access to the restricted folders.
Please help.
If you want to access the restricted files/folder on which item level permissions are enabled or in case you have break the inheritance on the sub-site, giving Full Access control will not a work.
In order to access the restricted files/folders/sub-sites user should be Site Collection Administrator.
SharePoint Administration Roles and SharePoint Permissions are explained in below articles:
Check if "Limited-access user permission lockdown mode" is enabled at site collection level. If yes, disable it. Then test again.
