VM Extenstion Pack error message in VM Manager

[giribt]

Base: Win 7
VM : Win7
============================
VM Version: 4.2.16.r86992
VM Extension Pack Version: 4.2.16 ( I have already installed this extension pack using "VBoxWindowsAdditions-amd64")

When I go to intial VM Manager and do check for upgrade, it finds extension pack needs tobe updated, and then downloads. After that, When I agree for the license, then I get the following error message...

Failed to install the Extension Pack C:/Users/e404726/.VirtualBox/Oracle_VM_VirtualBox_Extension_Pack-4.2.16.vbox-extpack.
The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ACCESS_DENIED
rcExit=1.
Result Code: E_FAIL (0x80004005)
Component: ExtPackManager
Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

Not sure why VM Manager couldn't detect already installed VM extension.

[noteirak]

You're confusing GuestAdditions and Extpack. The former is installed in the guest while the later in the host.
Your error says pretty much what happens : Virtualbox tried to do a file operation on the ext pack directory but got an denied by the OS to do so.

What is the output of the followng command - must be run within the installation dir of Virtualbox :

Code: Select all

vboxmanage list extpacks