The latest in a series of cost-saving moves was the cancellation of an animated series created by the former Royal Marine.
The show, which was announced last year, is one of several projects being dropped by the streaming giant.
Millions of people are set to quit the service after the revelation of a sharp fall in subscribers.
That wiped over $50 billion off the company&s market value as experts warned it faced a struggle to get back on track.
Last year, Archewell Production, the company formed by the Duke and the Duchess, announced that she would be an executive producer.
The series was supposed to tell the story of a 12-year-old girl who is inspired by women from history.
There are a number of projects with Archewell that will continue to be worked on by Netflix.
The series will focus on athletes competing in the games for injured veterans.
Archewell productions did not respond to the request for comment.
Two animated children's series, "Dino Daycare" and "Boons and Curses", were not going to be moving forward.
In the first three months of this year, the total number of subscribers fell short of the company's target.
In the three months to July, some two million more users are likely to leave the service.
The company had run out of easy ways to grow its business after a period of very strong expansion.
Squeezed consumers are cutting back on streaming services to save money, while some feel there is too much content to choose from, as competition from rivals such as Disney and Amazon increases.