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Windows 10 Insider build 19640 is now available for Fast Ring Insiders with two minor changes - OnMSFT.com
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Microsoft pushes a new Windows 10 Insider Preview Build 18343(19H1) for Fast ring Insiders - WinCentral
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Windows 10 Insider build 18945 for the Fast Ring released - here are the changes and known issues - OnMSFT.com
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