If your privacy settings have changed, you'll be prompted to restart Microsoft 365. If you didn't change the settings yourself, it's possible that your IT administrator made a change that affects your device, or that a change you made on a different device has synced to this device. The restart is necessary because we can't apply new privacy settings to services that are already running. Once you restart Microsoft 365 you should be able to resume using it normally, with your new privacy settings selected.
To restart, simply exit the Microsoft 365 applications, such as Word or Outlook, and start them again.
Note: If you have more than one Microsoft 365 app running you'll need to restart all of the running apps for the updated privacy settings to take effect.