Hi @jdaniel0,
Sorry for this inconvenience caused.
We would like to inform you that McAfee is compatible with windows 11 as well.
Having a security software already working on the device , if we perform an OS update, there are chances where Local system permission may conflict with antivirus functionality which we can resolve by re-installing the antivirus software.
Therefore we suggest always have a backup of your software before performing an OS update/upgrade.
Regards,
Smita
Kindly respond with a Kudos if this information is helpful to you by any means.