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It seems to be related &nbsp;to Hyper-V on Windows 10<br />
See here: &nbsp;<a href="https://www.virtualbox.org/ticket/18536" rel="ugc">https://www.virtualbox.org/ticket/18536</a>
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Thanks for posting your solution.
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<div class="content wysiwyg-content">
Failed to open a session for the virtual machine Ubuntu.<br />
<br />
Call to VidMessageSlotMap failed: Last=0xc000000d/87 (VERR_NEM_VM_CREATE_FAILED<wbr />).<br />
<br />
Result Code: E_FAIL (0x80004005)<br />
Component: ConsoleWrap<br />
Interface: IConsole {872da645-4a9b-1727-bee2-5<wbr />585105b9ee<wbr />d}<br />
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VBOX.LOG

Failed to open a session for the virtual machine Ubuntu.

Call to VidMessageSlotMap failed: Last=0xc000000d/87 (VERR_NEM_VM_CREATE_FAILED).

Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Failed to open a session for the virtual machine Ubuntu.

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.

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