![]() How to Identify that the VM is struggling to work on Windows 11 Host? Follow the below steps to fix it and make it work like usual. You will notice a green turtle icon on the virtual machine console.Sometimes you will not get the desktop screen even after 10 minutes. ![]() Reason for the Slow VirtualBox VMs in Windows 11 This indicates that there is a performance issue for the VM. The Microsoft Hyper-V feature or related services using virtualization technology (VT-x) on your computer. VT-x is a critical feature the VirtualBox uses to run the VMs at optimal speed. When the Windows services occupy this feature, VirtualBox can’t use it. Hyper-V and VirtualBox can’t access the VT-x (Virtualization technology) simultaneously on a computer. How to Fix Extremely Slow VirtualBox VMs – Windows 11/10 Host 1) Uninstall the Hyper-V feature We discussed a similar problem earlier here. If you installed Hyper-V, Sandbox, Docker features or anything related to Hyper-V recently, you need to uninstall them. These features and VirtualBox can’t work together well on a computer. Microsoft services like Hyper-V always access the VT-x technology first while the host OS boots up hence, VirtualBox can’t access them later.
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