Windows 8.1 Retail – Inputting your Windows Product Key and Activation via the Command Prompt

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If your product key is valid and rejected by Windows 8.1 despite being valid for that version of Windows you may input the product key via the command prompt. To do this right click the Start button or press [Windows] and [x]. Select Command Prompt (Admin)

Product Activation Removal

To input your product key type

slmgr /ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

Where xxxxx-xxxxx-xxxxx-xxxxx-xxxxx is your product key and then press Enter.

2

Select ok and then to activate type

slmgr /ato

This will activate your product.

Activating 4

Select ok and then close the command prompt.

If the product key is successfully input but product activation is rejected as in this case you need to use Phone Activation. This will happen for all systems that are offline.

Activation Failure

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