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Ticket Resolution Summary Owner Reporter
#17031 obsolete Skype causes virtual machine to crash half a second after login completes. kaanatakan
Description

Running an Ubuntu 17.04 Guest on a Windows 10 Host, after starting Skype for linux virtual machine quits with an "instruction at 0x.. referenced memory at 0x0 memory could not be read" error. This happens very soon after skype logs in, does not occur if skype is not started. Everything else seems to work fine.

#17030 fixed macOS 10.13 update installer fails granada29
Description

macOS High Sierra updates are failing. VirtualBox is not running the correct boot.efi when reboot is requested by the macOS update installer.

The problem is easily reproduced by attempting to install any of the macOS 10.13 beta updates over an existing macOS installation

To workaround this issue it is necessary to repeatedly hit the F12 key during the boot, break into the EFI shell, navigate to the macOS Installation directory and then run the boot.efi manually.

The details of this workaround are at https://raimue.blog/2017/06/09/upgrading-a-vm-from-macos-10-12-sierra-to-macos-10-13-high-sierra-in-virtualbox/

If this fails for some reason then its back to the beginning and try again.

I have seen this problem with both rawdisk (VMDK) installations and VDI installations. It also happens with macOS Sierra as the host OS and debian Linux (on Apple hardware) as the host OS. It's not a problem specific to macOS VirtualBox.

#17022 worksforme Host-only networking breaks if BridgedInterface is listed under DisabledModes Prolixium
Description

When switching between networking modes on a VM, VBoxManage will apparently store the previous modes under the <DisabledModes> tag in the .vbox file. I recently ran into a situation where the BridgedInterface mode was still being erroneously applied even though it was listed under DisabledModes and caused host-only networking to break (unidirectional connectivity). This required me to manually edit the .vbox file and remove the BridgeInterface line from DisabledModes.

For example, the following prevents all packets from guest -> host:

<Adapter slot="2" enabled="true" MACAddress="0002BC56CB29" cable="true" promiscuousModePolicy="AllowAll" type="virtio">
  <DisabledModes>
    <BridgedInterface name="tap0"/>
    <InternalNetwork name="intnet"/>
    <NATNetwork name="NatNetwork"/>
  </DisabledModes>
  <HostOnlyInterface name="vboxnet1"/>
</Adapter>

Removing the <BridgedInterface name="tap0"/> line under DisabledModes allows host-only networking to work correctly.

It seems some items under DisabledModes are still processed, which sounds like a bug.

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