Find Notification Center on the list, click on it to select it, and then click on the X button at the top of the window to stop the process. This app will show you all the processes currently running on your machine, even those working in the background. Through Spotlight ( command + space bar) find the Activity Monitor. Rebooting the app will immediately fix the problem. If nothing happens or you find the button is not purple (even though the DND moon icon is clearly visible on the top menu bar), you’re dealing with a bug and it’s time to bring in reinforcements.Īpple has not put out any official statements regarding this bug, but users have found it is related to a glitch in the Notification Center. In the top right of the menu that appears, you’ll see the Do Not Disturb button, which is purple when it’s on. To check, click on the notification icon in the top right corner of your screen (it looks like two toggle switches). Before you pull out the big bug-killing guns, make sure you didn’t accidentally activate DND mode on your own. First, make sure it’s a bugīig Sur is visually quite different from its predecessor, Catalina, so it can be easy to get lost. This means absolutely no notifications, which can be a major problem in the Work from Home Era. Users of macOS Big Sur have been reporting that this obnoxious bug shows up after the feature turns on automatically.