Error downloading URL. Your network connection may be down or your proxy settings improperly configured.

Hello, I am using the function urlwrite to downlaod a lot of html pages in a for loop. As an example, following is the url of one of the webpages:

https://waterdata.usgs.gov/nwis/inventory/?site_no=03347000&agency_cd=USGS&amp

And I use the following code to download the webpage:

  url=https://waterdata.usgs.gov/nwis/inventory/?site_no=03347000&agency_cd=USGS&
   openfile=urlwrite(url,filename); 

I get the following error:

  Error using urlreadwrite (line 97)
  Error downloading URL. Your network connection may be down or your proxy settings improperly configured.

  Error in urlwrite (line 38)
  [f,status] = urlreadwrite(mfilename,catchErrors,url,filename,varargin{:});

I have tried the solution provided on the link: https://www.mathworks.com/matlabcentral/answers/92506-how-can-i-configure-matlab-to-allow-access-to-self-signed-https-servers. Basically, I added the certificate for the webpage https://waterdata.usgs.gov/nwis/inventory/?site_no=03347000&agency_cd=USGS&amp (though, not sure if this what I was supposed to do).

Please let me know how to fix this probelm.

Note: I was able to use this code a year ago without this error.

[Fanny Huguelet]

I have the same problem, did you find a solution ?