VT-x not available in Windows 10 Pro even though i5-6400 CPU supports VT-X

Unfortunately VMWare prompt and its resolution document was misleading and not explanatory enough to help me.

To enable VT-x besides of enabling it in BIOS, uses should Disable Windows Defender Credential Guard as below:

1. Run gpedit.msc and then go to:

Computer Configuration -> Administrative Templates -> System -> Device Guard -> Turn on Virtualization Based Security

and select Disabled option.

2. Then run regedit and delete these keys if they are present in registery:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\LSA\LsaCfgFlags HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\DeviceGuard\EnableVirtualizationBasedSecurity HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\DeviceGuard\RequirePlatformSecurityFeatures

3. Execute cmd as administrator and run below command to enable NX bit:

bcdedit.exe /set {current} nx AlwaysOn

4. For me, the magic part was this. run regedit and in folder:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity

set Enabled to 0.

Here is the result:

P.S. Great thanks to Ulises2k for his/her answer at https://social.technet.microsoft.com/Forums/windows/en-US/8004c3bd-7d57-40ce-93de-0b1a6babd64c/how-i-can-disable-credential-guard?forum=win10itprovirt which helped me for part 4 of this answer.