(Solved) VirtualBox Error VT-x is not available (VERR_VMX_NO_VMX) in Windows 10
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In this article, learn how to fix the following error in VirtuaBox: "Failed to open a session for the virtual machine (VM MachineName). VT-x is not available (VERR_VMX_NO_VMX)".
1. Enable Hardware Virtualization in BIOS
2. Disable Hyper-V
3. Open command prompt as administrator, excute the following command: bcdedit /set hypervisorlaunchtype off
4. Restart your coputer.