VirtualBox: Resolving “AMD-V is not available” Error
So, you have VirtualBox and it was working before, then you try to use it again and open any of your Virtual OS. All of a sudden, you get this error:
The Fix
There are few items to consider in resolving this VirtualBox issue. To fix this issue, do the following:
Solution 1:
1. Press the Window key, then type “Turn Windows features on or off”
2. See if the “Hyper-V” checkbox is checked, if it is, unchecked it.
3. Restart your PC
Solution 2:
1. Press the Window key, then type “CMD” to access your console or command prompt.
2. Right-click it and select “Run as Administrator”
3. Paste this command: bcdedit /set hypervisorlaunchtype off
4. Restart your PC
Solution 3:
1. Press the Window key, then type “Run”.
2. At the field, type gpedit.msc
3. You will be prompted to Local Group Policy Editor. Go to Local Computer Policy > Computer Configuration > Administrative Templates > System > Device Guard > Turn on Virtualization Based Security. Set it to Disabled.
4. Restart your PC
I hope this will help resolve your issue. Solution no.2 works for the author.