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Is there a free software for windows that I can use to extract software serial keys? I have just bought my laptop and I want to use the serial on my desktop because I'll be using this more now.

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Belarc Advisor let's you recover license keys of installed software.

Note: if you bought the licenses through an OEM (pre-installed on the laptop), you will most likely violate their terms of service!

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Try keyfinder by Magic Jelly Beans.
The freeware version can find the serial of Windows / Office and many other products.

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