This error means that Intel VT-x or EPT (Extended Page Table) support on your computer is not working or is configured incorrectly. Virtualization tools such as GNS3 use VT-x and EPT to run network simulations with higher performance. Disabling or not using these features may cause performance issues or downtime when GNS3 is running a virtual machine.
Wrong solution
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Shut down the GNS3 server
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Find VTX and EPT in BIOS settings and set them to enable
You can enter the BIOS screen by pressing F2 or F10 when the computer starts. If you can’t find VTX or EPY in the BIOS settings, your processor may not support this feature.
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Disable Hyper-V functionality
Go to search bar Turn Windows features on or off in summer. Disable Hyper-V functionality.
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Shut down Hyper-V using the command
Open the command prompt (CMD) as an administrator. Type the following command and press Enter.
dism.exe /Online /Disable-Feature:Microsoft-Hyper-V-All -
Prevent Hyper-V from starting
Run the following command.
bcdedit /set hypervisorlaunchtype off -
Restart your computer and run the GNS3 server.
Follow the above steps This platform does not support virtualized Intel VT-x or EPT You can resolve this error.