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  1. I

    FTB launcher won't open on Windows 10

    I changed my version of Java and the launcher is now up and running :) I downloaded Java SE Runtime Environment 8 for Windows 64-bit and the FTB launcher opened with no problems.
  2. I

    FTB launcher won't open on Windows 10

    The version of Java from the previous Windows you owned is still installed. I haven't found a Win10 upgrade.
  3. I

    FTB launcher won't open on Windows 10

    I've had a similar problem, just upgraded to Windows 10 and when I open the launcher, I'm notified saying that Java SE Binary is not working and the launcher closes. I had no problems with the launcher on Win8.1