Using WSUS having issues with clients showing downloading 0% or not downloading windows 10 feature updates and thus the update failing, make sure you have this setting set in your WSUS server:
2) In MIME Type window: Actions -> Select “Add”
3) Add below details:
File name extension: .esd
MIME type: .esd application/octet-stream
Once above steps are completed, Windows 10 clients should have this happen automatically in next update cycle.