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Hello Mamadou Oury BARRY:
Thanks for reaching out to Microsoft Q&A.
If your microsoft subscription has been expired you can opt for pay-as-you-go model to continue your project. Or else you can register a new account and utilise the free subscription period and $ that are provided with it. But unfortunately I don't think you can extend your free account after exhausting it, please remember the free account is provided for learning purposes only, microsoft doesn't recommend utilising them for production grade workloads or projects.
Hope this answers your query.
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