oc exec and debug commands return "error: unable to upgrade connection: Unauthorized"

Issue

• When attempting to exec into any Pod on a given Node, the following error is displayed:

  unable to upgrade connection: Unauthorized
  

• The Node is also unable to be accessed using the oc debug nodes/<node> command.

• This command does not provide a shell and presents the following warning.

  $ oc debug node/<node>
  Starting pod/<node>-debug ...
  To use host binaries, run `chroot /host`
  Pod IP: <Pod_IP>
  If you don't see a command prompt, try pressing enter.
  
  Removing debug pod ...
  error: unable to upgrade connection: Unauthorized