cant uninstall or update extension pack 4.3.2 even after uninstalling virtualbox

[vizz8info]

try to uninstall or update extension pack

get

Failed to uninstall the Extension Pack Oracle VM VirtualBox Extension Pack.

The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS rcExit=1.

Result Code: E_FAIL (0x80004005) Component: ExtPackManager Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

Failed to install the Extension Pack C:/Downloads/Oracle_VM_VirtualBox_Extension_Pack-4.3.6-91406.vbox-extpack.

The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS rcExit=1.

Result Code: E_FAIL (0x80004005) Component: ExtPackManager Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

[vizz8info]

could be related to https://www.virtualbox.org/ticket/12266

[Son of the Raven]

Experiencing the same error with 4.3.16 on Windows 8.1 Host.

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.