Hi @Ndubisi Azuogu ,
an Azure Free Subscription is limited to one use. There are multiple factors verified, for instance email address and credit card details. If you ever had a free Azure Subscription with one of these you get this message.
I am not aware of conflicts with other Microsoft products and Azure Free Subscription.
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten