Vagrant up - VBoxManage.exe error: VT-x is not available (VERR_VMX_NO_VMX) code E_FAIL (0x80004005) gui headless [closed]

Answer 1

Search for Windows Features. Turn off Hyper V.Most likely, Virtual Box is clashing with Hyper V on Windows. Also check for Hyper V running in your Services. Stop and disable that as well.