The error code 0xe00086cc in Veritas Backup Exec typically indicates an Access Denied"
For NAS or networked storage, ensure the Backup Exec service account has Full Control on the share and NTFS permissions. 0xe00086cc backup exec
Trust Relationship Issues: The security certificate between the Backup Exec server and the remote computer is missing or invalid. The error code 0xe00086cc in Veritas Backup Exec
If the above solutions don't work, you may need to perform more advanced troubleshooting: Remove the device from BE → Rescan devices