Here are the steps to delete Windows.old folder. This folder is created after an important update of the windows like for example from windows 8 to windows 10, or with the Windows Creator Update!

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••• Create a bitcoin wallet on coinbase and start gain 10$ by buying/selling 100$ Bitcoin, by following this link : ​
https://www.coinbase.com/join/5a32424fe6143501ac44ab71

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