Fixed .NET framework 4.0 error when installing Visual Studio 2010

The error:

- Windows 7 Pro 32bits

- I had VisualStudio 2010 RC installed successfully but removed prior to VS 2010 setup

- I have Visual Studio 2008 installed at the same PC

- My system disk is called I:, not C:

- I turned off all the anti-virus software while installing

- I got the following error in the event viewer after turning on the Installer trace:

Windows update "Update for Windows (KB958488)" could not be installed because of error 2147944003 "Fatal error during installation." (Command line: "wusa.exe "I:\7ef862549a4cbd33ceefb00d4a1c19\Windows6.1-KB958488-v6001-x86.msu" /quiet /norestart")

- I got the following error in the log:

Action: Performing Action on Exe at I:\Users\Billibit\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\Windows6.1-KB958488-v6001-x86.msu...

[5/3/2010, 22:55:12]Launching CreateProcess with command line = wusa.exe "I:\Users\Billibit\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\Windows6.1-KB958488-v6001-x86.msu" /quiet /norestart
[5/3/2010, 22:55:21]Exe (I:\Users\Billibit\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\Windows6.1-KB958488-v6001-x86.msu) failed with 0x643 - Fatal error during installation. .
[5/3/2010, 22:55:21]PerformOperation on exe returned exit code 1603 (translates to HRESULT = 0x643)

[5/3/2010, 22:55:21] Action complete

[5/3/2010, 22:55:21]Error 1603 is mapped to Custom Error:
[5/3/2010, 22:55:21]OnFailureBehavior for this item is to Rollback.

...

Final Result: Installation failed with error code: (0x00000643), "Fatal error during installation. " (Elapsed time: 0 00:01:24).

How to fix it?

- Use .NET Framework Cleanup Tool to remove .Net Framework 4.0

- download the tool from http://blogs.msdn.com/astebner/pages/8904493.aspx

- Uninstall KB958488 from Update Windows Feature at Uninstall of Control Panel. It will ask to reboot the PC, but DO NOT reboot! immediately install .Net 4.0.