[python-win32] LocalService, COM

[Dahlstrom, Roger]

Because both LocalService and NetworkService have minimal privileges on the local computer, while LocalSystem, admin, and guest have more extensive privileges.

From: python-win32 [mailto:python-win32-bounces+rdahlstrom=directedge.com at python.org] On Behalf Of Tore Klars
Sent: Thursday, October 31, 2013 12:00 PM
To: python-win32 at python.org
Subject: [python-win32] LocalService, COM

I'm debugging a COM issue with pythoncom: a Python program is unable communicate
with VirtualBox over COM when run under the LocalService or NetworkService
Windows accounts. The same program can communicate with VirtualBox without issue
under the LocalSystem, administrator, and Guest accounts.

Under LocalService and NetworkService, this line

  win32com.client.Dispatch('VirtualBox.VirtualBox')

raises

  com_error(-2147024891, 'Access is denied.', None, None)

Why are the LocalService and NetworkService accounts unable to communicate with
VirtualBox over COM?

Thank you.

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