Same problem of wget interrupted by a certificate problem:

After do-release-upgrade from 16.04 to 18.01

Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. Check your Internet connection or proxy settings

wget https://changelogs.ubuntu.com/meta-release-lts

--2018-09-15 08:03:41--  https://changelogs.ubuntu.com/meta-release-lts
Resolving changelogs.ubuntu.com (changelogs.ubuntu.com)..., 2001:67c:1560:8008::11
Connecting to changelogs.ubuntu.com (changelogs.ubuntu.com)||:443... connected.
ERROR: cannot verify changelogs.ubuntu.com's certificate, issued by ‘CN=DigiCert SHA2 Secure Server CA,O=DigiCert Inc,C=US’:
  Unable to locally verify the issuer's authority.
To connect to changelogs.ubuntu.com insecurely, use `--no-check-certificate'.

Also (as root):

Updating certificates in /etc/ssl/certs...
0 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...

wget https://www.google.com/

--2018-09-16 16:54:31--  https://www.google.com/
Resolving www.google.com (www.google.com)..., 2a00:1450:4003:80a::2004
Connecting to www.google.com (www.google.com)||:443... connected.
ERROR: cannot verify www.google.com's certificate, issued by ‘CN=Google Internet Authority G3,O=Google Trust Services,C=US’:
  Unable to locally verify the issuer's authority.
To connect to www.google.com insecurely, use `--no-check-certificate'.

Update 2018-10-23:

openssl s_client -connect www.google.com:443 -debug


openssl s_client  -connect www.google.com:443 --debug --CApath /etc/ssl/certs/  


 wget https://www.google.com/  --ca-directory=/etc/ssl/certs/ 

works , so why default ca-directory is not /etc/ssl/certs/ ? and I do set it ?

New Update and solved : With :

strace -e openat wget https://your-url

I saw that is was using /usr/local/lib/libssl.so.1.1 , so I found one openssl installed on /usr/local , after delete it, it fixes the problem .


  • Any special configuration involved in /etc/wgetrc or ${HOME}/.wgetrc? Also try to reinstall wget with sudo apt-get install --reinstall wget. – Thomas Sep 16 '18 at 16:07
  • No , ${HOME}/.wgetrc does not exit and /etc/wgetrc is unchanged , reinstall wget didn't solve the issue – Sérgio Sep 17 '18 at 1:31
  • Are there actually any certificates in /etc/ssl/certs/ca-certificates.crt ? – Ben Sep 17 '18 at 22:59
  • ll -h /etc/ssl/certs/ca-certificates.crt -rw-r--r-- 1 root root 203K set 17 02:46 /etc/ssl/certs/ca-certificates.crt – Sérgio Sep 18 '18 at 15:39

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