DTAG008 - The antivirus signature file age must not exceed 7 days.
Antivirus signature files are updated almost daily by antivirus software vendors. These files are made available to antivirus clients as they are published. Keeping virus signature files as current as possible is vital to the security of any system.
Update client machines via ePO client task. If this fails to update the client, update antivirus signature files as your local process describes (e.g., auto update or runtime executable.)