Hello,
Please open the Control Panel and go to “Programs” > “Turn Windows features on or off,” then clear the checkboxes for “Hyper‑V,” “Windows Sandbox,” “Windows Hypervisor Platform,” and “Virtual Machine Platform.”
Next, open “Windows Security” > “Device security” > “Core isolation details,” and turn off “Memory integrity.”
Depending on your edition of Windows, some of these items may not appear in the “Turn Windows features on or off” list.
After changing the settings, please restart Windows.
Regarding the other settings, please check whether Credential Guard is enabled by referring to the documentation below.
It may be necessary to disable Credential Guard, but for detailed instructions specific to MuMu Player, I recommend contacting the MuMu Player support team.