Yes, with 400, the kill bit is set.
{41B23C28-488E-4E5C-ACE2-BB0BBABE99E8} is the CLSID for HHCtrl Object.
C:\WINDOWS\system32\hhctrl.ocx
hhctrl.ocx is the Microsoft® HTML Help Control
ActiveX controls and the kill bit
[[Warning Microsoft does not recommend unkilling (undoing the kill action
on) an ActiveX control. If you do so, you may create security
vulnerabilities. The kill bit is typically set for a reason that may be
critical, and because of this, extreme care must be used when you unkill an
ActiveX control. Also, because the following procedure is highly technical,
do not continue unless you a very comfortable with the procedure and you it
is a good idea to read the whole procedure before you start.
The CLSID for an ActiveX control is a GUID for that control. You can
prevent an ActiveX control from running in Internet Explorer by setting the
kill bit so that the control is never called by Internet Explorer. The kill
bit is a specific value for the Compatibility Flags DWORD value for the
ActiveX control in the registry. However, after the kill bit is set for an
ActiveX control, that control is not called by Internet Explorer at all.]]
[[To set the kill bit so that an ActiveX control is never called by Internet
Explorer:
Note To determine the CLSID that corresponds with the ActiveX control that
you want to disable, you must first remove all the ActiveX controls that are
currently installed, install the control that you want to disable and then
add the kill bit to its CLSID.]]
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX
Compatibility
Compatibility Flags DWORD value is set to 00000400, the kill bit is set.
Info from...
How to Stop an ActiveX Control from Running in Internet Explorer
http://support.microsoft.com/kb/240797
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Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In