Odd. Safari has no problem and says certificate expires August 16 2020, but I also see the download.file issue with 4.0.1 beta:
> download.file("https://www.r-project.org", tempfile()) trying URL 'https://www.r-project.org' Error in download.file("https://www.r-project.org", tempfile()) : cannot open URL 'https://www.r-project.org' In addition: Warning message: In download.file("https://www.r-project.org", tempfile()) : URL 'https://www.r-project.org/': status was 'Peer certificate cannot be authenticated with given CA certificates' (note slightly different error message). svn is also affected: Peters-MacBook-Air:R pd$ svn up Updating '.': Error validating server certificate for 'https://svn.r-project.org:443': - The certificate has expired. Certificate information: - Hostname: *.r-project.org - Valid: from Aug 16 00:00:00 2018 GMT until Aug 15 23:59:59 2020 GMT - Issuer: COMODO RSA Domain Validation Secure Server CA, COMODO CA Limited, Salford, Greater Manchester, GB - Fingerprint: 93:B8:AF:9F:0A:67:2F:3A:C9:BA:FF:86:BB:2C:08:47:02:7F:1D:8D (R)eject, accept (t)emporarily or accept (p)ermanently? t U src/library/grid/R/grob.R .... ssltest shows two certificates of which only one is expired? -pd > On 30 May 2020, at 22:17 , Gábor Csárdi <csardi.ga...@gmail.com> wrote: > > On macOS 10.15.5 and R-devel: > >> download.file("https://www.r-project.org", tempfile()) > trying URL 'https://www.r-project.org' > Error in download.file("https://www.r-project.org", tempfile()) : > cannot open URL 'https://www.r-project.org' > In addition: Warning message: > In download.file("https://www.r-project.org", tempfile()) : > URL 'https://www.r-project.org': status was 'SSL peer certificate or > SSH remote key was not OK' > > https://www.ssllabs.com/ssltest says: > > COMODO RSA Certification Authority > Fingerprint SHA256: > 4f32d5dc00f715250abcc486511e37f501a899deb3bf7ea8adbbd3aef1c412da > Pin SHA256: grX4Ta9HpZx6tSHkmCrvpApTQGo67CYDnvprLg5yRME= > Valid untilSat, 30 May 2020 10:48:38 UTC (expired 8 hours and 51 > minutes ago) EXPIRED > > AFAICT this is the reason: > https://calnetweb.berkeley.edu/calnet-technologists/incommon-sectigo-certificate-service/addtrust-external-root-expiration-may-2020 > > FYI, > Gabor > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel