Re: MSXML 4.0 Service Pack 2 fails to install - cannot open registerk

>> Could not open key:
>> HKEY_LOCAL_MACHINE\Software\Classes\Msxml2.DOMDocu ment.4.0\CLSID. Verify
>> that you have sufficienta access to that key, or contact your support
>> personnel.

This is a Permissions issue.

>> Considering I had recently – somewhat misguidedly - removed the previously
>> installed MSXML parser (as a result of some problems experienced during the
>> infamous latest MSMXML SP2 failed recurring automatic Security Update -
>> KB927978) it occurs to me that one reason the program cannot "open the key"
>> is possibly because the related folders and registry keys are no longer there
>> (I did take a quick look at the register and I didn't see any
>> Msxml2.DOMDocument.4.0 folder of any kind under
>> HKEY_LOCAL_MACHINE\Software\Classes.)

Please explain 'removed the previously installed MSXML '. Was it
uninstalled from Add/Remove Programs ?

One has to drill *all the way down* to locate that subkey in
HKLM\Software\Classes. A quick look for it isn't possible.

Is this XP Pro or Home ?


MowGreen [MVP 2003-2007]
===============
*-343-* FDNY
Never Forgotten
===============



Tlingel17 wrote:

> PROBLEM:
>
> I tried to install the MSXML 4.0 Service Pack 2 (Microsoft XML Core
> Services) but the msxml.msi installation was interrupted with the following
> message:
>
> Could not open key:
> HKEY_LOCAL_MACHINE\Software\Classes\Msxml2.DOMDocu ment.4.0\CLSID. Verify
> that you have sufficienta access to that key, or contact your support
> personnel.
>
> POSSIBLE CAUSE:
>
> Considering I had recently – somewhat misguidedly - removed the previously
> installed MSXML parser (as a result of some problems experienced during the
> infamous latest MSMXML SP2 failed recurring automatic Security Update -
> KB927978) it occurs to me that one reason the program cannot "open the key"
> is possibly because the related folders and registry keys are no longer there
> (I did take a quick look at the register and I didn't see any
> Msxml2.DOMDocument.4.0 folder of any kind under
> HKEY_LOCAL_MACHINE\Software\Classes.)
>
> HELP:
>
> What can I do to fix this at this point?

>"MowGreen [MVP]" wrote:

Thank you for your interest.

> This is a Permissions issue.

It seems like it - surprinsingly so! Installing MSXML 4.0 service pack 2
should not be an issue - I am using XP Home and am using a user profile with
full computer administrator status.

> Please explain 'removed the previously installed MSXML '. Was it
> uninstalled from Add/Remove Programs ?

Yes - I uninstalled it from the Add/Remove Programs.

> One has to drill *all the way down* to locate that subkey in
> HKLM\Software\Classes. A quick look for it isn't possible.

Hmm...actually all one has to do is use the Microsoft Registry Editor
(regedit.exe) to inspect the registry and take a quick look.

> Is this XP Pro or Home ?

This is XP Home (Windows XP SP2.)

Any suggestion?

The Perm issue is with the subkey, it has nothing to do with what User
Account is installing the update. If the System does not have permission
to access said subkey, it can not install the update.

>
>> Hmm...actually all one has to do is use the Microsoft Registry Editor
>> (regedit.exe) to inspect the registry and take a quick look.

No quick look will locate the subkey. It took me a few minutes to
navigate to the Capitalized subkeys of Classes to locate it.

Please check here :

HKEY_CLASSES_ROOT\Msxml2.DOMDocument.4.0\CLSID

and then recheck here :

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Msxml2.DOMDocu ment.4.0\CLSID

Right click each CLSID folder and choose Permissions.
Both should show Admin and System with Full Control and Read perms.


MowGreen [MVP 2003-2007][
===============
*-343-* FDNY
Never Forgotten
===============



Tlingel17 wrote:

>>"MowGreen [MVP]" wrote:
>
>
> Thank you for your interest.
>
>
>>This is a Permissions issue.
>
>
> It seems like it - surprinsingly so! Installing MSXML 4.0 service pack 2
> should not be an issue - I am using XP Home and am using a user profile with
> full computer administrator status.
>
>
>>Please explain 'removed the previously installed MSXML '. Was it
>>uninstalled from Add/Remove Programs ?
>
>
> Yes - I uninstalled it from the Add/Remove Programs.
>
>
>>One has to drill *all the way down* to locate that subkey in
>>HKLM\Software\Classes. A quick look for it isn't possible.
>
>

>
>
>>Is this XP Pro or Home ?
>
>
> This is XP Home (Windows XP SP2.)
>
> Any suggestion?
>

>"MowGreen [MVP]" wrote:
>
> Please check here :
>
> HKEY_CLASSES_ROOT\Msxml2.DOMDocument.4.0\CLSID
>
> and then recheck here :
>
> HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Msxml2.DOMDocu ment.4.0\CLSID
>
> Right click each CLSID folder and choose Permissions.
> Both should show Admin and System with Full Control and Read perms.

Aha, I see what you mean, and you were right. It was indeed a "system"
permission isue. System had not be granted Full Control and Read perms. That
took care of it. Well done, thanks!

Yer mowst welcome. Well done !!


MowGreen [MVP 2003-2007]
===============
*-343-* FDNY
Never Forgotten
===============



Tlingel17 wrote:

>
>>"MowGreen [MVP]" wrote:
>>
>>Please check here :
>>
>>HKEY_CLASSES_ROOT\Msxml2.DOMDocument.4.0\CLSID
>>
>>and then recheck here :
>>
>>HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Msxml2.DOMDo cument.4.0\CLSID
>>
>>Right click each CLSID folder and choose Permissions.
>>Both should show Admin and System with Full Control and Read perms.
>
>
> Aha, I see what you mean, and you were right. It was indeed a "system"
> permission isue. System had not be granted Full Control and Read perms. That
> took care of it. Well done, thanks!

You know what the funny thing is about all of this, i had the same problem
and i thought it was fixed when i allowed admin and system access to the key,
but when
i tried the installation again, i told me i dont have access to another key,
i fixed permission with that but then it happened with like three more keys
lol, my solution, allow system access to Every Thing.

cheers.

"MowGreen [MVP]" wrote:

> Yer mowst welcome. Well done !!
>
>
> MowGreen [MVP 2003-2007]
> ===============
> *-343-* FDNY
> Never Forgotten
> ===============
>
>
>
> Tlingel17 wrote:
>
> >
> >>"MowGreen [MVP]" wrote:
> >>
> >>Please check here :
> >>
> >>HKEY_CLASSES_ROOT\Msxml2.DOMDocument.4.0\CLSID
> >>
> >>and then recheck here :
> >>
> >>HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Msxml2.DOMDo cument.4.0\CLSID
> >>
> >>Right click each CLSID folder and choose Permissions.
> >>Both should show Admin and System with Full Control and Read perms.
> >
> >
> > Aha, I see what you mean, and you were right. It was indeed a "system"
> > permission isue. System had not be granted Full Control and Read perms. That
> > took care of it. Well done, thanks!
>