I tried to install the Extension pack but get the following error:
Failed to install the Extension Pack D:/Installs/Oracle VirtualBox/Oracle_VM_VirtualBox_Extension_Pack-6.1.30.vbox-extpack.
Signature #2/2: Not valid kernel code signature.: \Device\HarddiskVolume4\Program Files\Oracle\VirtualBox\ExtensionPacks\Oracle_VM_VirtualBox_Extension_Pack\win.amd64\VBoxPuelMain.dll.
Result Code: E_FAIL (0x80004005)
Component: ExtPackManagerWrap
Interface: IExtPackManager {70401eef-c8e9-466b-9660-45cb3e9979e4}
Any help appreciated
Jerry