Acquisition of the VirtualBox COM object failed

[henryhs]

Hello,
I tried to install last and oldest Virtualbox, but everytime I see the error

Acquisizione dell'oggetto COM di VirtualBox non riuscita.

L'applicazione sarà terminata immediatamente.

Document is empty.

Location: 'C:\Users\henry\.VirtualBox\VirtualBox.xml', line 1 (0), column 1.

F:\tinderbox\win-5.2\src\VBox\Main\src-server\VirtualBoxImpl.cpp[554] (long __cdecl VirtualBox::init(void)).

Codice di uscita:E_FAIL (0x80004005)
Componente: VirtualBoxWrap
Interfaccia: IVirtualBox {9570b9d5-f1a1-448a-10c5-e12f5285adad}
Chiamante: IVirtualBoxClient {d2937a8e-cb8d-4382-90ba-b7da78a74573}

I also try to unistall and reinstall but no news.
Someone can help me?
Thanks
Henry

[mpack]

You need to uninstall and then reinstall AS THE CORRECT USER, i.e. not using the special administrator user account.

Also, use "Run as administrator" to run the installer, to ensure that all components are properly installed.

[socratis]

Although the error may be pointing to a COM issue, it's actually not a registry or a Windows issue, it's a corrupted 'VirtualBox.xml' issue.

• The "C:\Users\henry\.VirtualBox\VirtualBox.xml" file has 0 bytes, it's empty, corrupted. Something went wrong.
• In that same location, there should be a "C:\Users\henry\.VirtualBox\VirtualBox.xml-prev", that's a backup.
• Quit VirtualBox, count to 10.
• Delete the file "C:\Users\henry\.VirtualBox\VirtualBox.xml". No point in keeping it around.
• Copy "C:\Users\henry\.VirtualBox\VirtualBox.xml-prev" as "C:\Users\henry\.VirtualBox\VirtualBox.xml".
• Start VirtualBox.

[mpack]

Although the error may be pointing to a COM issue, it's actually not a registry or a Windows issue, it's a corrupted 'VirtualBox.xml' issue.

Hmm. Quite so. Looks like I should have looked beyond the title, I guess I must have been in a hurry.