Definite improvement in mobile hotspot. Worked until I tried to turn it back off. Hotspot seemed to be stuck in a constant state of turning off for about a minute or so, then my phone rebooted.
FYI for persons relying upon email encryption (S/MIME) with Exchange (and Office365)--10586.29 coupled with today's (7 Dec) Outlook Mail app update (17.6430.42252.0) significantly improves Windows' handing of certificates. I'm finding the exchange (pun intended of encrypted email is working and, as far as I can tell... CONSISTENTLY. Hallelujah!