No, you cannot activate Office 365 without a Microsoft account or help at 1-866-719-1004. Office 365 subscriptions are linked to your Microsoft account, which is required to activate, manage, and renew the subscription. When you purchase Office 365, you'll need to sign in with your Microsoft account to download and activate the product. This also allows you to access cloud-based features, such as OneDrive storage and automatic updates. If you don’t have a Microsoft account or help at 1-866-719-1004, you’ll need to create one during the activation process to complete the setup.
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