Jun 26, · Microsoft released the preview version of Windows today. Since it is only a preview version, it is free and everyone can install and try it. If you are upgrading your existing Windows 8, then you will not need a license key, since you may have already used a license key while installing the original Windows 8. However, if you are doing a fresh install, then you will be prompted to provide Estimated Reading Time: 2 mins. Oct 12, · How to Activate Windows by Phone or with Free Product Keys Windows 10 has been released since years ago, but still a lot of people disable Windows 10 automatic update and just want to stick with Windows 7 or 8. When it is necessary to upgrade to a new OS, many users will choose Windows
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