Retrieved files ca't be opened

[azstar]

I did find this  http://community.wd.com/t5/WD-Portable-Drives/Access-Denied-on-file-retrieval/m-p/660519/highlight/true#M17874 but this requires doing this to every file individually which is impractical with thousands of files. Is there a way to batch fix this or change settings when backing up or retrieving?