Error code 45090 indicating invalid product-key while reinstalling Windows XP.

Original Title: Windows XP Activation.

I am reinstalling Windows XP on my Computer. I Used exactly the same media that came with the computer. But  When Activation through internet I Got the error message 45090 indicating invalid product-key. I double-check the  Product Key, and re-enter it again but still the problem persists.

I tried through the phone(1-88 number)  entering the long number  (Installation id) and it is telling me that it is an invalid product number or something like that.

Help !!!


Hi uagtecos,

You may follow this link completely & check if the issue persists.

You receive an error message after you enter the product key when you try to install Windows XP

Hope the information helps.

Please post back and let us know.

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Question Info

Last updated June 15, 2020 Views 13,918 Applies to: