Can I please have help with the following question?
I can't access all the data I want to from the internet, especially Wolfram Data Repository. However, my connectivity is not necessarily flawed. When I go to "Test Internet Connectivity" it returns a success message, and these following items also return meaningful answers through my internet connection:
CountryData[Entity["Country", "United States"], "Flag"]
However, when I try other methods of accessing data, specifically the following example included in the Eiwl book: Entity["AnatomicalStructure",
"Skull"]["Graphics3D"], or when I enter SpeciesData[
Entity["Species", "Family:Elephantidae"], "AlternateCommonNames"], I get the following error message:
EntityValue::nodat: Unable to download data. Some or all results may be missing.
I have Chrome 48 and Mathematica 11, with a fully functional browser. I have a perfectly working connection and can access Wolfram|Alpha just fine.
I had the same issue in Mathematica 11.3,
but the problem indeed was connection: in my case it was unsynchronised time/date in operation system (Windows 7).
In that case you would also notice problems with connecting to any https:// website.
I hope that might help.