fixing The subscription is not registered to use namespace 'Microsoft.AzureActiveDirectory'

gistfile1.txt

# 1

Start up a shell and type the following command.

az login

This will start up a browser and you will need to log into Azure.

# 2
Use the account list command you can get a list of your subscriptions.

az account list

Once the required subscription is located it needs to be set.

az account set --subscription "Pay-As-You-Go

# 3 

az provider register --namespace Microsoft.AzureActiveDirectory
ps: SELECT THE RIGHT SUBSCRIPTION NAME