Win10 January 3, 2018 Updates And AV Software

Important information regarding the Windows security updates released on January 3, 2018 and anti-virus software
Microsoft has identified a compatibility issue with a small number of anti-virus software products.
The compatibility issue is caused when anti-virus applications make unsupported calls into Windows kernel memory. These calls may cause stop errors (also known as blue screen errors) that make the device unable to boot. To help prevent stop errors caused by incompatible anti-virus applications, Microsoft is only offering the Windows security updates released on January 3, 2018 to devices running anti-virus software from partners who have confirmed their software is compatible with the January 2018 Windows operating system security update.
If you have not been offered the security update, you may be running incompatible anti-virus software and you should follow up with your software vendor.