You're right we're working to get an update to FinancialData pushed out as soon as possible that will restore those basic calls and others that are currently failing.
Also this might come handy at some point: "Financial data from Quandl in Wolfram Language using QuandlLink"
http://community.wolfram.com/groups/-/m/t/540228
The data is accessible through EntityValue
EntityValue[Entity["Financial", "NYSE:SPY"], "LatestTrade"]
I have the same problem but was able to get the data via WolframAlpha e.g. WolframAlpha["APPL close Nov 4 2016 to Nov 6 2017"]
Thanks so much!
Regards
Not working.
In[1]:= FinancialData["SPY"] During evaluation of In[1]:= FinancialData::conopen: No internet connection can be established to the data source. Out[1]= $Failed