virtualbox - virtualization is enabled but not working

Turn off the core isolation security provided in the Windows Defender Security Centre. I found that enabling it turn off your Intel Virtualization technology feature while it is enabled in BIOS. Steps to follow: 1. Go to Windows Defender Security Centre. 2. Search for Device Security in the left Panel and click on it. 3. Now click on core isolation. 4. Turn off the memory intergrity security. If it didnt turn off and show (This is managed by your device Administrator) then follow the steps by searching on google. You may need to download a file and enter into registry to turn it Off. Just google it.

I seach for 2 days and nothing worked for me.. then i find the solution:

The problem is in Windows 10... u need to disable Hyper-V Manager ...

1) make sure in your BIOS cpu virtualization is enable.

2) open your CMD as administrator

3) in your desktop folder type bcdedit and look for hypervisorlaunchtype in the bottom ... if it is Auto or enable we need to disable it !!!!!!

See this picture

4) type in your cmd bcdedit /set hypervisorlaunchtype off

5) Restart your OS and be happy !!!

i know this is a old question ... but for everyone who have a similar problem i hope it helps !!