Hi Minh,
The error message you encountered indicates that your tenant has been inactive for over 200 days past the billing cycle, triggering Microsoft’s effort to remove inactive tenants. When a tenant remains inactive for this period, the OMS commerce system imposes a login block (AADSTS5000225). Twenty days after the login block is applied, the tenant is permanently deleted.
Follow the link for more info and if required you can create a support ticket to get it unlocked or if it is for testing recreate a new tenant?
https://learn.microsoft.com/en-us/entra/fundamentals/inaccessible-tenant
Hope this helps.
JS
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