If your Microsoft Office subscription has expired or the trial period has ended, you can reactivate classic Outlook​​​​​​​ by renewing your subscription.
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Go to the My account page and sign in to the Microsoft account you use for Microsoft 365.
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Select Subscriptions.
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Next to Microsoft 365, select Renew and follow the instructions.
If your Microsoft Office subscription has expired or the trial period has ended, you can reactivate new Outlook by renewing your subscription.
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Go to the My account page (for business accounts) or to the Microsoft account page (for personal accounts) and sign in to the account you use for Microsoft 365.
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Select your subscription and renew it.Â
