Hello @Jason McKenna
Thank you for posting this in Microsoft Q&A.
As I understand you're unable to add a new Entra ID Tenant and the option to create new tenant is Greyed out.
This is by design. Earlier Microsoft used to allow users to create multiple tenants. However, our security team recently identified this practice for fraudulent and abusive activities.
Tenant creation is important for organizations to help manage their instances of Microsoft services. However, allowing employees unrestricted ability to generate free tenants creates liability and security concerns for our customers. It forces bad actors to purchase or activate a trial, which triggers a trade Screen that increases the likelihood of catching bad actors earlier in the chain of tenant creation.
In order to enhance your organization's security, Microsoft is now limiting this functionality to only those customers who have paid Microsoft Entra P1/P2 license.
A recent hotfix now restricts tenant creation by requiring paid P1 or greater licenses. If the Entra ID P2 license is a trial license, that is not enough. Customers attempting to create tenants with trial P1+ licenses will also fail in creating tenants.
You Subscription is linked to your tenant. However, to create new tenant you need to have Microsoft Entra P1/P2 license. These licenses are within your directory where you have your subscription linked to.
Refer to this guide - https://learn.microsoft.com/en-us/entra/fundamentals/get-started-premium
Customers in this situation who need a new trial tenant can sign up for a Free Azure Account
I hope this clarifies things.
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