Hi,
Good Day! I would like to ask what's the best way to restrict users per site collection. Our plan is to add users on every site collection page to restrict users from viewing/adding. By default our Sharepoint User policy has NT authority\authenticated as Full read(as you can see below image). If I delete this user policy then everyone gets an access denied error even they are already specified on the sharepoint site permission page. Is there any other options for this?