It's not really something you want to touch if you're not very sure what you're doing. There's a reason this feature is "locked" against casual access. But when you are not the owner, you'll have to unlock this option to change the permissions. most of the files in your own user folder such as your Desktop and Documents folders. Note that you are always allowed to change permissions (whether the icon is locked or unlocked) when you (your user) is the owner of the file - e.g. This is a feature of the underlying Unix operating system that allows different privileges for a user, group, and others. After you provide it, the system will allow you to change the permissions for that file or folder in that "Sharing & Permissions" pane you see at the bottom of the Get Info window.
Now when you open the Sharing preference pane you will have your lock back. Do not release the icon until the icons on your Dock have moved by one. Once you have found it, click on its icon and drag it to the Dock.
So, now you can turn that annoying lock screen off (or on) with a click using a tiny freeware app called, NoLockScreen.OK. 1.) While the program is open, right-click on its icon in the taskbar.
That’s where you will find all of the applications that are installed on your Mac computer. And here’s how to do that both on Windows 10 and Windows 11. No idea though why the lock icon was missing in the first place. Navigate to the Applications folder and click on it. OK the change and then lock the S&P preference pane. As you suggested, I've now reset all layouts back to factory settings in the project where this occurred ('Revert Factory Settings.' in the Layout dropdown) this worked - now the lock icon is back Thanks a lot, that helped. Click the Advanced button at the bottom and enable the Require an Administrator. Clicking the lock icon will prompt you for an admin password. Open System Preferences and select Security & Privacy.