About a couple of weeks ago, the Guest user account was automatically enabled on my Mac running OS X El Capitan (by itself, without me enabling it). Now, whenever I start my Mac, I am greeted with a login screen showing two accounts: 1) Mine. 2) Guest user.
I have Find My Mac turned off, as I know people have suggested that the Find My Mac feature may be responsible for this behavior. Beyond that, I have logged out of my iCloud account from "System Preferences -> iCloud," and also disabled the Guest account from "System Preferences -> Users & Groups." Now it shows the Guest user as off in System Preferences.
However, when I start my Mac, I'm still shown two accounts to log-in. And yes, I have tried and have successfully managed to log into the Guest account despite having disabled it in System Preferences.
This is very strange, and I was wondering if anyone has found a fix.
Additional Info which may help: I've never had this issue with any other versions of OS X prior to El Capitan. And I've got FileVault enabled, and it's been enabled since OS X Lion without this issue.
I'd greatly appreciate any feedback.