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I have Windows 10 Pro and I successfully installed Windows Sandbox. However, when I try to run it, it shows the following error:

My (physical) hard drive is indeed compressed (NTFS compression) and encrypted (BitLocker). Is there any way to make Windows Sandbox work on my system?

  • I cannot disable BitLocker, but I'm hoping that when it says "encrypted" it means NTFS per-file encryption and not BitLocker.
  • I could disable compression for the folder where the virtual hard disk files are stored, but where are those files stored?
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  • The message might refer to the virtual environment file of Windows Sandbox. Try: (1) Ensure that the Windows Sandbox folder is uncompressed, (2) Uninstall Windows Sandbox, reboot, uninstall Hyper-V, reboot, then reinstall in reverse order.
    – harrymc
    Oct 30, 2020 at 18:36
  • Like I said, I want to try to disable compression, but I don't know which folder to uncompress.
    – user1193029
    Oct 30, 2020 at 19:01
  • I believe that Windows Sandbox is located in the folder C:\ProgramData\Microsoft\Windows\Containers.
    – harrymc
    Oct 30, 2020 at 20:24
  • Thanks! I disabled compression for that folder, and now it works :)
    – user1193029
    Oct 30, 2020 at 20:31
  • Thanks for the confirmation, so I added an answer.
    – harrymc
    Oct 30, 2020 at 20:32

1 Answer 1

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The Windows Sandbox is located in the folder C:\ProgramData\Microsoft\Windows\Containers.

This folder needs to be uncompressed for Windows Sandbox to function.

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