Happy New Year, @lgperam!
It would be really helpful if you share the details that @Multipack asked you about. In addition I'd also suggest you share a screenshot of your
Disk management in Windows (e.g. via Imgur).
Is this a brand new external WD My Passport or do you have data already stored on the drive?
If it's a brand new drive, you will have to
Initialize the HDD first and then
Partition & Format it through Windows' Disk Management. These procedures are to be executed only if this external WD Passport is a brand new unformatted HDD. If there are files on it, these processes will erase all the containing files, so be careful.
Keep us posted with the details & let us know if you need further assistance.
SuperSoph_WD