From: PA Bear [MS MVP] on
The "How to obtain help..." section also points you to no-charge support.

For home users, no-charge support is available by calling 1-866-PCSAFETY
(and/or 1-866-234-6020 and/or 1-800-936-5700) in the United States and in
Canada or by contacting your local Microsoft subsidiary. There is no-charge
for support calls that are associated with security updates. When you call,
clearly state that your problem is related to a Security Update and cite the
update's KB number (e.g., KB978207).

LOOK! => If your problem relates to a Cumulative Security Update for IE
(e.g., KB978207), call the above number and ask to be transferred to the
"Consumer IE queue" (which is 47830).

Or you can...

Start a free Windows Update support incident request:
https://support.microsoft.com/oas/default.aspx?gprid=6527

The Consumer Security Support home page & Microsoft Update Solution Center
also offer support options
https://consumersecuritysupport.microsoft.com/
http://support.microsoft.com/ph/6527#tab3

For more information about how to contact your local Microsoft subsidiary
for security update support issues, visit the International Support Web
site: http://support.microsoft.com/common/international.aspx

For enterprise customers, support for security updates is available through
your usual support contacts.


ander wrote:
> I've already visited the help pages of the website. That's where it was
> suggested I try the 4 methods - which I tried to no avail.
>
> "PA Bear [MS MVP]" wrote:
>
>> Detect & remove the hijackware blocking the install of the update?
>>
>> Or perhaps see the "How to obtain help" section of
>> http://support.microsoft.com/kb/978207?
>>
>>
>> ander wrote:
>>> I have windows vista home premium SP2. I cannot install Update
>>> KB978207.
>>> I
>>> tried all 4 methods suggested on MS website: (1) restart, (2) safe mode,
>>> (3)
>>> clean boot, (4) disable firewall/antivirus. None worked - continued to
>>> get
>>> error message 0x80070020.
>>>
>>> I then manually downloaded Update KB978207, and tried to install again
>>> in
>>> safemode. Got error 0x8007043c "this service cannot be started in safe
>>> mode".
>>>
>>> Apparently, this update is "critical" for Vista users. How do I get it
>>> installed?
>>
>> .