Cannot update my WD SmartWare software in Settings Tab

I use my MBL 2TB drive on my local network. I depend on WD SmartWare to backup my desktop computer. I am running W10 Home. My current backup version for WD SmartWare is 2.4.16. When I go into Settings: Software Update and press the Check Now button I receive the following message:

“The underlying connection was closed. An unexpected error occurred on a send.”

How do I address this error?

I was expecting to update to version 2.4.21. Release date 05/25/2018.

@Silverjohn You will have to download the newer version and install it.