update has no 643 unknown error code

Several updates failed, namedly Microsoft.NET Framework 4 client profile for windows 7 x 64 systems and updating security for Office 2007.  Also, I was able to upgrade to the latest version of itunes so I put my windows installer to manual start, but I get the message that the installation of Microsoft Service could not access. This can occur if you are running Windows in safe mode or if Windows Installer is not installed properly. Need help please, I can not use my new Iphone 4 completely.

Have you tried to manually install these two Microsoft Updates? http://www.Microsoft.com/downloads

To reinstall Windows Installer, rename the damaged Windows Installer files, and then reinstall the Windows Installer. To do this, follow these steps:

1. click on start, run, type cmd in the Open box, and then click OK.
2 type cd % windir%\system32, and then press ENTER.
3. Type attrib - r s h dllcache and then press ENTER.
4 type ren msi.dll msi.old, and then press ENTER.
5. type ren msiexec.exe msiexec.old and then press ENTER.
6 type ren msihnd.dll msihnd.old, and then press ENTER.
7. Type exit and press ENTER.
8. at the command prompt, type exit and press ENTER.
9. click on start and then click on stop computer or Shut Down.
10. Select the reboot option, and then click OK or click on restart.
11 log in the computer.

1. click on start and then click on stop computer or Shut Down.
2. Select the reboot option, and then click OK or click on restart.

Also:

Click Start
Type: CMD, according to the results, right-click CMD
Click on "Run as Administrator"
At the command prompt, type: sfc/scannow

This will check for any breach of integrity

Restart your system

Releasing it's easy: with Windows | ActiveWin | Laptops | Microsoft MVP

Tags: Windows

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    Hello Yiratr,

    Thank you for using the Microsoft answers Forums.

    Solution:

    Follow the steps in the web link below.

    http://support.Microsoft.com/kb/956702

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    Thank you.

    Kind regards

    Augustine.

    "URGO".

    UDAY $012 please let me know that whether the solution worked or not, I thank you and appreciate your comments. URGO

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