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Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
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If you're having trouble with your Microsoft 365 subscription, it's important to get this sorted quickly. For assistance, you can reach out to Microsoft Support directly through their support page. They should be able to help you retrieve your username and cancel your subscription.
Take a breath—you're handling it.