We have an odd issue. It started back in September with some Windows updates. Any machine that accepted these updates and rebooted was no longer able to communicate with the ZCM server. The machines can ping it, and access ZCC via Firefox, but not via IE11. We are not able to remote control or push things out to machines with these updates either. The only solution we have found is to updatse all the updates from that day and turn off future updates as MS forces you to install these updates if they're enabled.

Anyone have any ideas?