Issues with macOS Tahoe as VM on macOS Sequoia

Discussion in 'macOS Virtual Machine' started by MichaelM92, Aug 28, 2025.

  1. MichaelM92

    MichaelM92 Member

    Messages:
    29
    To be upfront, I do NOT actually NEED this configuration...just wanting to try out Tahoe without blowing out my daily driver install.

    Problem:
    I have Issues with
    • macOS Tahoe as VM on macOS Sequoia (latest)
    • on my Late 2016 MBP (Intel)
    • using OCLP (Open Core Legacy Platform).
    1st Problem:
    I can't sign into Apple Account. Get an "Unknown error" when trying to sign in

    2nd Problem:
    The whole time I am running Tahoe in the VM, the CPU shows as constantly peaked at 100% (the Parallels CPU indicator at the top of the VM window).

    My Question:
    Has anyone had similar experiences and have you found a work around to at least get it to work normally, if not performant.

    Again, I do NOT need to run this, I just want to. At some point in the future, I will be getting a new machine and this will all be a moot point.

    Thanks!
    Michael McEuin
     

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