Windows 10 1607 upgrade fails via WSUS with error code 0x80244019

1. Start: Internet Information Services (IIS) Manager

2. Select
Sites
WSUS Administration
Content
MIME Types

3. Add...
extension = .esd
MIME Type = application/vnd.ms-cab-compressed

(note you can copy the .cab entry)

4. Restart IIS with
iisreset