Could not read from remote repository

Question

I have received the following error multiple times:

Could not read remote repository. Please make sure you have the correct access rights and the repo

Answer 1

Installing a root/CA Certificate

Given a CA certificate file foo.crt, follow these steps to install it on Ubuntu:

Create a directory for extra CA certificates in /usr/share/ca-certificates:

sudo mkdir /usr/share/ca-certificates/extra

Copy the CA .crt file to this directory:

sudo cp foo.crt /usr/share/ca-certificates/extra/foo.crt

Let Ubuntu add the .crt file's path relative to /usr/share/ca-certificates to /etc/ca-certificates.conf:

sudo dpkg-reconfigure ca-certificates

This is an old post, but this is they only thing that I found that worked.