VirtualBox extension package uninstallation or installation failed (VERR_ALREADY_EXISTS) Solution

VirtualBox extension package uninstallation or installation failure (VERR_ALREADY_EXISTS) solves the problem that VirtualBox cannot be uninstalled recently. The error message "Failed to install The extension. the installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS." cannot be installed again. This article describes the description and solutions. 1. fault description environment: Windows 7 (64bit) + VirtualBox 4.2.12 + ExtensionPack (4.2.12-84980) expansion package a typical feature is support for USB 2.0 (EHCI) controller. On the VirtualBox Main Menu, click file> Preferences> Extensions to check whether the extension package is installed in the current system. If yes, the corresponding packages are listed. Click the cross button on the Right To unmount the expansion package. In this case, an exception occurs as follows: since it cannot be uninstalled, you can try to reinstall it and receive an error message: is the error prompt during reinstallation the following is the fault text description Failed to install the extension C:/Users/aquarelle/Downloads/Oracle_VM_VirtualBox_Extension_Pack-x.x.x-xxxxx.vbox-extpack. é chec de l 'installation de l' extension C:/Users/aquarelle/Downloads/Oracle_VM_VirtualBox_Extension_Pack-y.y.y-yyyyy.vbox-extpack. the installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rena Me the extension pack directory: VERR_ALREADY_EXISTS rcExit = 1. code d 'erreur: E_FAIL (0x80004005) Composant: ExtPackManager Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554} 2. Solution a. Disable all VirtualBox virtual machines B. Execute vboxmanage extpack cleanup at a Windows command prompt. The operation is as follows: C: \ Users \ robinson. cheng> cd \ C: \> cd "Program Files" C: \ Program Files> cd Oracle C: \ Program Files \ Oracle> cd VirtualBox C: \ Program Files \ Oracle \ VirtualBox> vboxmanage extpack cleanup Successfully saved med extension pack cleanup C: \ Program Files \ Oracle \ VirtualBox> cmd Microsoft Windows [Version 6.1.7600] Copyright (c) 2009 Microsoft Corporation. all rights reserved. 3. Perform the preceding operations again after uninstalling the package, as shown in figure If yes, remove it first. In this case, it should be able to be removed successfully. Click the path of the extension package in the lower-right corner and select the extension package. In the displayed dialog box, click Install and click I Agree. After the package is successfully installed, a message is displayed, and click OK. In this case, you can see the added extension package on the Extensions page.