"Unable to Detect Operating system" error when trying to install Windows 10 Client ARM64 Insider Pre

Discussion in 'Parallels Desktop for Apple Silicon (M1) Mac' started by MattB20, May 10, 2021.

  1. MattB20

    MattB20 Bit Poster

    Messages:
    1
    I have a M1 Mac Mini, Big Sur 11.3.1, Parallels 16.5 updated as of 5/10/21 and downloaded Windows 10 Client ARM64 Insider Preview - Build 21354, which is the only build I can find to download on the https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewARM64 site.
    When I point the Parallels install at the VHDX file I get "Unable to Detect Operating system". I have tried re-downloading the file and I still get the error.
    Please help.
     

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  2. prestidigitat

    prestidigitat Bit Poster

    Messages:
    2
    Same issue on my M1 Air. Any solutions?
     
  3. Maria@Parallels

    Maria@Parallels Parallels Team

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    8,050
  4. prestidigitat

    prestidigitat Bit Poster

    Messages:
    2
    No issues on macOS 11.4.
     
    Maria@Parallels likes this.
  5. Maria@Parallels

    Maria@Parallels Parallels Team

    Messages:
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    Please let us know if the issue reoccurs and collect the tech data right after that.
     
  6. AdinC

    AdinC

    Messages:
    1
    any resolution for this? I have the same issue.
     
  7. Maria@Parallels

    Maria@Parallels Parallels Team

    Messages:
    8,050
    Hello, do you have an issue with Windows or Linux?
    Could you collect the tech report once the issue reoccurs and post the report's ID here please?
     
  8. BrandonK4

    BrandonK4 Bit Poster

    Messages:
    2
    I just tried to install Windows10 ARM build 21345 on the new iMac macOS 11.4 and ran into the same problem. Parallels is "Unable to detect operating system", if you select Windows 10 as the OS you're just presented with a "Operation failed" error dialog box on the next step. I've submitted a tech report and the ID is as follows 370637573.
     
  9. Maria@Parallels

    Maria@Parallels Parallels Team

    Messages:
    8,050
    Just in case, could you please try to mount your .iso file to mac (by double clicking on it) and let us know if it doesn't work.
     
  10. BrandonK4

    BrandonK4 Bit Poster

    Messages:
    2
    I tried that yesterday and received the same error... This morning for some reason it works. Both by dragging the VHDX file into Parallels and by just double clicking it. Not sure what's changed between last night and this morning.
     

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