Unable to Add New Device to Microsoft Account

Lara @ Metissages 20 Reputation points
2025-08-26T16:34:16.0033333+00:00

Experiencing difficulties adding a new ASUS PC to a Microsoft account. Currently, there are no devices connected, and the account allows for up to 10 devices. The PC is brand new and not linked to any other Microsoft account.

Each attempt to add the device results in the error message: "the serial number is not recognized."

Any assistance would be appreciated.

Microsoft 365 and Office | Install, redeem, activate | For home | Windows
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  1. Stefan Blom 310.3K Reputation points MVP Volunteer Moderator
    2025-08-26T16:51:35.9066667+00:00

    Adding devices to an account is primarily intended for Microsoft devices, such as Surface.

    Are you trying to install some version of Microsoft Office? For that, you do not need to add the device first. Install Office from your account at https://account.microsoft.com/services .


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