Quarantined virus files are not backed up, and your backup reports a failed status.

Cause: If the quarantine folder for your antivirus software is saved to a volume that is protected by a previous version of Volume Shadow Copy service, then the shadow copy captures the quarantine folder. As a result, the shadow copy includes viruses.

Solution: You can either use the antivirus software to move the quarantine folder to a volume that is not protected by Volume Shadow Copy service or configure the anti-virus application to delete infected files instead of having them quarantined.

For more information about resolving this issue, if you are using TREND Micro, Inc. antivirus software on your server, see Article 888035, “Quarantined virus files are skipped and your backup reports a failed status on your Windows Small Business Server 2003-based computer” at the Microsoft Knowledge Base (https://go.microsoft.com/fwlink/?LinkId=70319).