Docker pull error : x509: certificate has expired or is not yet valid

Question

Description of problem:

I\'m trying to pull ubuntu from the public registry with this command :

docker pull ubuntu

And then i got this

Answer 1

This happened also to me:

• while trying to login to an Artifactory.
• when my local docker daemon has been running for a couple weeks.

I simply restarted my local docker daemon, and could login to the Artifactory with no error message.