$ curl https://packages.microsoft.com/config/rhel/7/prod.repo | sudo tee /etc/yum.repos.d/msprod.repo
$ sudo yum update
Loaded plugins: priorities, update-motd, upgrade-helper
amzn-main                                                                                                         | 2.1 kB  00:00:00     
amzn-updates                                                                                                      | 2.5 kB  00:00:00     
packages-microsoft-com-prod                                                                                       | 2.9 kB  00:00:00     
packages-microsoft-com-prod/pr FAILED                                          
https://packages.microsoft.com/rhel/7/prod/repodata/e6f0123ba3200645a09e933edf355b349c20a6761773f81d812e39d62ab3423c-primary.sqlite.bz2: [Errno 14] HTTPS Error 404 - Not Found
Trying other mirror.
To address this issue please refer to the below knowledge base article 

https://access.redhat.com/articles/1320623

If above article doesn't help to resolve this issue please open a ticket with Red Hat Support.

packages-microsoft-com-prod/primary_db                                                                            |  42 kB  00:00:00     
No packages marked for update