yum/dnf commands fails with the error Received HTTP code 407 from proxy after CONNECT

Solution Verified - Updated -

Issue

  • Why does yum/dnf fails with the error [Received HTTP code 407 from proxy after CONNECT] ?

    Errors during downloading metadata for repository 'rhel-8-for-x86_64-appstream-rpms':
  - Curl error (56): Failure when receiving data from the peer for https://cdn.redhat.com/content/dist/rhel8/8/x86_64/appstream/os/repodata/repomd.xml [Received HTTP code 407 from proxy after CONNECT]
Error: Failed to download metadata for repo 'rhel-8-for-x86_64-appstream-rpms': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

Environment

  • Red Hat Enterprise Linux 8
  • Red Hat Subscription Manager (RHSM)

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