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Error using websave - certificate rootcerts.pem expired, missing or invalid

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Hi everybody!
Today my code has decided to do not collaborate anymore :(...in fact this error message has started appearing a couple of hours ago in the command window when i try to connect to a specific website to scrab some weather data.
Could not establish a secure connection to "nomads.ncep.noaa.gov". The reason is "error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed". Check your certificate file (C:\Program Files\MATLAB\R2018b\sys\certificates\ca\rootcerts.pem) for expired, missing or invalid certificates.
I have checked if other discussions about the same trouble were available but nothign seems to be similar to mine.

Accepted Answer

Biral Pradhan
Biral Pradhan on 30 Aug 2022
I understand, you are trying to connect to a website and getting an error related to certificate verification. Kindly follow the following link as a workaround to resolve the issue:
  2 Comments
Karen
Karen on 23 Nov 2022
hi, could you show me the lines you used to solve the issue?
I'm using this:
options=weboptions;
options.CertificateFilename=('');
websave(URL,options);
But is not working. it says: Unrecognized function or variable 'URL'.

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