Tls: failed to verify certificate: x509

How did you install the Docker Engine exactly?

What do you get when you run the following command?

curl -vvvv

you can check the certificate this way:

openssl s_client -showcerts -connect </dev/null

Please use code blocks as described here: How to format your forum posts

You can also check if you have an antivirus on the host. Recently I found out that the ESET antivirus can replace the original certificates with its own cert and cause issues in command line while web browsers accept it.

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