Go to the folder where you keep your virtual machine. Shut down your Windows 11 VM and close VMWare Player. Disable side-channel mitigations in VMWare Player Learn how to enable or disable Hyper-V in Windows here. Note that the message with a recommendation to disable side-channel mitigations appears only on systems with Hyper-V enabled. The software will warn you about potential performance downgrades when using a virtual machine with side-channel mitigations.īut the problem is that VMWare Player does not provide an option to disable side-channel mitigations in the settings UI (similar to how it does not allow you to add a Trusted Platform Module inside settings for a specific VM).įortunately, you can fix poor performance in Windows 11 running in VMWare Player by disabling side-channel mitigations in the machine's configuration file. 
You might encounter one particular issue when running a Windows 11-based virtual machine in VMWare Player.
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