Windows Defender Definition Keep Informed KB2267602 Definition 1.233.3200.0 Error code 80070652
That error code basically just means the keep post failed to install.
If other KB226702 Updates (that’s the daily definition updates for Windows Defender) since 12/23/16 have installed it’s okay to just ignore that message. The 12/23/16 “failure” was faithfully an isolated anomaly – maybe WD was already updated and it did not
need the keep post. I wouldn’t fear about it unless it starts occurring on a regular basis.