Once your account has been canceled, the only way to revive it is to go to http://commerce.microsoft.com , make sure you select a subscription from the drop-down list next to your name in the upper right part (to check if it is correct , select the subscription and the subscription should be canceled), as soon as ur is under the correct one, go to the payment options and add or change the credit card ur ... it will then update the service and resume service ... after that is done, and that's it will be ok you can go to the azure portal access and manage your payment options from there.
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