Today I had the issue that automatic downloading the OVF for vSAN Fileservices failed for whatever reason. Thus I had to take the manual approach but downloading only the .ovf file via the given Link is not enough.
Required are overall 6 files that are needed for the Appliance to work. You will find hints to the filename when opening the ovf file and just replace the last part of the downloadlink with the appropriate file.
Part of this is shown in the official documentation but now how to get the files:
After selecting all 6 files when choosing manual approach (yes the screenshot is wrong) you can go on.
Cheers