Microsoft has added a new and very important detail on the support page describing incompatibilities between antivirus (AV) products and the recent Windows Meltdown and Spectre patches.
According to an update added this week, Microsoft says that Windows users will not receive the January 2018 Patch Tuesday security updates, or any subsequent Patch Tuesday security updates, unless the antivirus program they are using becomes compatible with the Windows Meltdown and Spectre patches.
The way antivirus programs become compatible is by updating their product and then adding a special registry key to the Windows Registry.
It’s interesting to see Microsoft do this they are really flexing their power again. Microsoft has a lot riding on Windows 10 and wants nothing to mess it up.