Hi @ Nur Shoshea •
Thank you for sharing your issue on Microsoft Q&A.
I understand that you want to delete your old Azure account or tenant, but you’re unable to log in since you no longer have access to the associated email accounts.
Could you clarify why you're looking to delete the old tenant, especially since it hasn't been in use for so long? Are there any active subscriptions linked to that tenant?
Additionally, when creating a new tenant, are you encountering any specific issues? I recommend using a different personal email address to create a new tenant instead of relying on the old account credentials.
If you are still looking to get access to your old tenant and you are the only global admin on the account, please contact our support team. You can look into the article below to get support numbers depending on your country.
https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
or creating a ticket through a different account: https://learn.microsoft.com/en-us/microsoft-365/admin/get-help-support?view=o365-worldwide#phone-support
While creating a ticket with Microsoft support team. Give them the tenant ID which is locked out in your description. Tell them that no admin account has access anymore and your partners also have no access anymore.
Once you create a ticket with the support team you will have to work with our data protection team. You will have to first prove your identity against your tenant for security purposes. Post that this team will help you with getting access to your tenant or unlock your account depending on your scenario.
If you need further assistance, please feel free to ask.
Best regards,
Harshitha Eligeti.