To remove a user's permissions:
- Open SharePoint Online, select the site for which you want to set permissions, and click in the left sidebar.
- Navigate to the folder for which you want to set permissions, and click (). In the menu that appears, click .
- In the "Manage Access" panel, click the arrow () next to the user's name. A menu will open with three options: , , and . To remove the user's permissions, select .
When you remove permissions from a top-level folder, unique permissions will not be removed from subfolders of that folder. Removing users from direct folder access on a top-level folder will only remove permissions for subfolders where those folders are inheriting permissions from the parent folder. If the subfolders have unique permissions added for individuals, you will want to navigate through the folder structure to remove permissions on any folders that had unique permission levels.