Guest wont start on windows host, maybe update

[raouf]

Hello
i have a centos78 guest that no more boots on a windows 10 host, only yesterday it worked
nothing changed except install of an update (kb4592438)
attached are my virtual box logs
can you please point me to some directions, i reinstalled virtualbox but still have the problem
Regards

[raouf]

files where bigger than 125k, had to zip them

[raouf]

managed to boot the guest by disabling hyper-v
strange , only yesterday it worked with hyperv enabled