webread could not be determined IP adress

I'm having since two weeks problems using webread to get data from an URL. I can open the URL using the MATLAB browser, but if I use webread doesn't works and show the code :

Error using webread (line 122)

The IP address of "xxx.xxx.x.xx" could not be determined.

Previously it worked without problems. this happens for any url read.

[Nikhil]

Hi Julio, Can you give more context on what URL and content that you need to access ? webread is working fine for me in MATLAB browser.

[Julio Castro]

Hi !. The problem "The IP address of "xxx.xxx.x.xx" could not be determined", is reported it with any URL (eg: http://www.mathworks.com). Maybe it's a webread options problem (which didn't happen before). I tried reading with urlread.m and it read the web page with no problem !.

>> DATA= webread('http://www.mathworks.com')

Error using webread (line 122)

The IP address of "192.168.X.XX" could not be determined.

>> DATA = urlread('http://www.mathworks.com')

DATA =

'OK'

[Nikhil]

Hi Julio, check this link once. Might help.

Also, one thing that I have noticed from my end is webread is not working for me if I set the protocol to http, but the same thing works fine with https.

You could try the above thing as well and let me know

[Julio Castro]

Thank you very much !!

it worked using:

options = weboptions( 'CertificateFilename' , '' " );

webread(url, options)

I've tried both https and http, and it worked both ways.

Answer 1

[Nikhil]

Webread does not work anymore, but urlread still does. - MATLAB Answers - MATLAB Central (mathworks.com)

Check the above link . ( posting as an answer instead of comment)