I can not display the date and time on the lock screen. the other options to display on the lock window is fine, no problems, however the date and time is impossible. The device is a SP4. I sent a technical support SP4 MS because I had problems with the clock losing synchronism, now I have a different SP4 and do not think I can be related to the problem. I've reconfigured the SP4 several times the same result.

The last hypothesis of a google search is done in my account MS have a problem. I have yet to try a local user and see if it clears.

Can anyone provide more information to me?