たこすけ さん お知らせありがとうございます
https://support.microsoft.com/en-us/help/4052623/update-for-windows-defender-antimalware-platform 404 Sorry, page not found
https://learn.microsoft.com/en-us/defender-endpoint/microsoft-defender-antivirus-updates
https://www.microsoft.com/en-us/wdsi/defenderupdates
