Weird Windows 10 issues today...

Had a weird Windows 10 issue today. After a recent MS update windows all of the sudden rejected Symantec Anti Virus as an application that is not compliant with Windows 10...huh? This version 12.1.6 MP2 is the original Windows 10 compliant installation. Seems that Microsoft has changed something making a anti virus update mandatory. Do far this also includes Kaspersky anti virus as well. The compliant Norton anti virus version for Symantec anti virus (SEP) is now 12.1.6 MP6. A complete uninstall of the old version is necessary before the correct version can be installed.