This wasn't a matter of anti-virus software interfering with a data download from Schwab. It was a disconnect between the time Schwab said the data file(s) were ready to view (download) and Turbotax. It appears the .pdf version of 1099's was available on Schwab before the data file version was. I was able to complete the download Feb 27. The .pdf version(s) were viewable Feb 26.
