virtualbox.org

I installed Virtual Box 4.24 and afterwards downloaded the Extension Pack.
The update program identify that there is a previous version of the Extension Pack installed and ask if the preious version shall be upgraded.
After confirmation to upgrade when the system try to install the Extension pack I get an error message

"Failed to instal the Extension Pack C:/Users/uname/.Virtualbox/Oracle_VM_Virtualbox_Extension_Pack-4.2.4.vbox-extpack
The installer failed with ext code 1:VBoxExtPackHelperApp.exe: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS
rcExit=1.

Even by renaming the folder VERR_ALREADY_EXISTS manually and execute the installation of the Extension pack again the same error appear.

Due to this error I am not able to install the extension pack and because of that my VB 4.2.4 can't run with USB controller.

Does anybody have an idea how to solve this issue?

Manually remove using VBoxManage from a command window. You will need to be in the directory that has VBoxManage.exe for the command to work

First make sure everything VirtualBox is shut down.

Then try the command below If it reports success then install the new version before you start anything VirtualBox.

Hello Perryg,

I followed your advice but it was not successful.

Rudi

Here the result:

C:\Program Files\Oracle\VirtualBox>VBoxManage extpack uninstall --force "Oracle VM VirtualBox Extension Pack"
0%...
Progress state: E_FAIL
VBoxManage.exe: error: Failed to uninstall "Oracle VM VirtualBox Extension Pack"
VBoxManage.exe: error: The installer failed with exit code 2: VBoxExtPackHelperApp.exe: error: Unknown option: '--forced'
VBoxManage.exe: error: rcExit=2
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component ExtPackManager, interface IExtPackManager
VBoxManage.exe: error: Context: "int __cdecl handleExtPack(struct HandlerArg *)" at line 1152 of file VBoxManageMisc.cpp

When I try without --force I get the following:

C:\Program Files\Oracle\VirtualBox>VBoxManage extpack uninstall "Oracle VM VirtualBox Extension Pack"
0%...
Progress state: E_FAIL
VBoxManage.exe: error: Failed to uninstall "Oracle VM VirtualBox Extension Pack"
VBoxManage.exe: error: The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS
VBoxManage.exe: error: rcExit=1
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component ExtPackManager, interface IExtPackManager
VBoxManage.exe: error: Context: "int __cdecl handleExtPack(struct HandlerArg *)" at line 1152 of file VBoxManageMisc.cpp

Hello Perryg,

I got it.

I executed the command
C:\Program Files\Oracle\VirtualBox>VBoxManage extpack cleanup

Afterwards I executed
C:\Program Files\Oracle\VirtualBox>VBoxManage extpack uninstall "Oracle VM VirtualBox Extension Pack"
and it was successful

Then I could install the Extension pack without problems.

Rudi