Unable to open kernel device ‘\\.\VMCIDev\VMX’: The operation completed successfully.

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If you encounter the following error message:

Unable to open kernel device ‘\.\VMCIDev\VMX’: The operation completed successfully. Did you reboot after installing VMware Workstation? Module ‘DevicePowerOn’ power on failed. Failed to start the virtual machine.

You may want to try editing the VMX file for your virtual machine and changing this variable from true to false:

vmci0.present = "false"

(it was the located on the last line in my VMX)

After making this change, I was able to successfully boot my VM in VMWare Workstation Pro 16 👍

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