I understand that you are encountering "AADSTS16000" error.
Error AADSTS16000 is thrown when the user not found in the tenant used for authentication. In your case, this error usually occurs when you sign in to Azure Portal using your personal account which is not added as an external/guest user to an Azure AD tenant. Due to this, you by default get connected to the Microsoft Services tenant.
For this purpose, you need to create a new tenant, open in-private/incognito browser window (just to avoid SSO), access https://azure.microsoft.com/en-us/free/ to create a free Azure account.
But you are facing "Your account must be in good standing to sign up" error message.
You must keep your Azure subscription in good standing to avoid interruptions in paid services.
https://learn.microsoft.com/en-us/azure/devops/organizations/billing/billing-faq?view=azure-devops#q--what-happens-if-i-cancel-my-azure-subscription-or-my-credit-card-expires-
Maybe - if you have - try with another card.
If still problem persists then we can engage the Data Protection team via a support ticket to unblock your access.
To proceed, I will need a few details from you. As this information contains Personally Identifiable Information (PII), please share the following details via private message:
- Contact phone number (add +Country code)
- Contact email address
- Global admin email address (affected account)
- Country
- TimeZone
Please send me the detail via private message.
We can then connect offline to discuss further and assist you in resolving this issue.
Hope this helps. Do let us know if you have any further queries.
If this answers your query, do click `Accept Answer`
and `Yes`.