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No, you ill have to go online at least once to activate the subscription.
Sorry, there was a problem. Please try again later.No, you will need to connect to the internet at least once to initiate Windows 10. Microsoft Office 365 won't start until Windows 10 is initiated/setup. Once Windows 10 is initiated/setup, you will be able to use Microsoft Office 365 without being connected to the internet again.
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