Vista SP2 impossible to install

Question：

Hello alltogether,

My Vista system used to have all latest updates until I did a system restore. After the system restore, SP2 was not installed anymore (or not installed yet, whatever).

The error I am getting is 0x80070002, ERROR_FILE_NOT_FOUND.

Tried so far:
-Downloaded the standalone SP2 installer with the same result
-sfc /scannow which told me that everything's allright
-System Update Readiness Tool for Windows Vista (KB 947821) which told me that everything's allright
-The troubleshooting steps mentioned in Windows help (clearing C:\windows\softwareDistribution\Download)

The problem of course persists. I tried to look through CBS.log and found nothing I could start with, it's avaible at http://kirillst.ki.funpic.de/dlext/CBS.zip

The system is Vista x86, I installed all updates I could except SP2.

I hope that anyone is able to help, I am not really able to reinstall the whole system because it's not really my system and the owner actually wants to use the PC instead if watching me maintaining it.

Answer 1：Hi NeoBoot ,

Thank you for choosing Windows vista Community.

This issue can occur if one of the following conditions is true:
A program on your computer interfered with the installation of the service pack.
There is an inconsistency in the Windows Servicing Store. The Windows Servicing Store is a component that is required to successfully install the service packs.

I would suggest you to perform the steps (excluding the ones you have already tried) from the link below:
   http://support.microsoft.com/kb/947366

Make sure you remove all the external devices(except mouse and the keyboard) before you install SP2.

Let me know how it helps.
Regards,
Amritha.


Answer 2：Hello,

Thank you for the answer.

Sadly, it did not help. I tried all four solutions and the result is still the same, the installation does not work.

Are there any further log files I could upload to help troubleshooting? I already tried to look through the installer activity with Process Monitor without finding anything, yet my knowledge of Windows internals is quite limited.