Finally, I found a solution which involves multiple steps. Elsewhere in this forum are some of the steps required.
Following that, another step is required to disable applehfs.sys which is described in details at Apple Archives - Ed Andersen

Thank you all for your help in solving a problem that Microsoft Tech Support could not.

Now, I can create a restore point. Of course, I also learned that creating an image of a BootCamp Windows installation is useless for restoration purposes. I purchased Winclone for creating an image in that environment.