Oct 16, · Clean install of your previous of Windows, then activate it, after that, upgrade to Windows Wait for the system to activate itself, after that, if you prefer, you may consider to do a clean install of Windows By the way, Windows 10 build allows you to activate with your previous Windows key. Which you could download from here. When trying to activate Windows, many users reported an error code 0xcc, as a result of which access to the system was blocked. This can happen in the following cases: Your product key is not successacademyonline.orgted Reading Time: 6 mins.
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