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How to fix VirtualBox "Failed to open a session for the virtual machine" error (IMAGE_READ_ONLY) - YouTube
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VirtualBox, come risolvere "Apertura di una sessione per la Macchina Virtuale non riuscita" (0x80004005)
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windows 10 - Vagrant up - VBoxManage.exe error: VT-x is not available (VERR_VMX_NO_VMX) code E_FAIL (0x80004005) gui headless - Stack Overflow
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