How to fix MultiMC (minecraft launcher)

Lawrence Harrison (MMS Student) 0 Reputation points
2026-11-06T13:47:51.35+00:00

I cant open one of my files called MultiMC and my friends used to be able to open it but now it is blocked

Windows for home | Other | Gaming
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  1. Emma1-N 14,905 Reputation points Microsoft External Staff Moderator
    2026-11-07T00:04:02.8133333+00:00

    Welcome Lawrence Harrison (MMS Student),

    Thanks for posting on Microsoft Q&A. I'm sorry MultiMC won't open anymore, especially since it worked for you and your friends before. To find the right fix, please answer a few quick questions:

    • Which account do you use to sign in to Windows? Is it a personal Microsoft account (for example @outlook.com, @hotmail.com or @gmail.com) or a school account?
    • Who owns and manages this PC? Is it your own or your family's computer, or was it given to you by your school?
    • What exactly happens when you try to open MultiMC?
    • Which version of Windows are you using?

    Once we have these details, we can walk you through the next steps.

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