.net install problems error 1603 windows installer 0x643 update

When installing updates using Windows update or Microsoft Update you may receive Error 0x643 or 0x80070643 (23 Oct-09)
http://support.microsoft.com/kb/976982

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Step #1 => Before doing anything else, write down what .NET Framework versions are currently installed:

How to determine which versions of the .NET Framework are installed and whether service packs have been applied
http://support.microsoft.com/kb/318785

Step #2 => Now see Resolution Method 2 in this related KB article: http://support.microsoft.com/kb/923100

After running the .NET Framework Cleanup Tool, reinstall all .NET Framework versions (but only the ones you wrote down in #1 above) manually using the download links on the page then run Windows Update manually to install security updates for same.

NB: If you remove .NET Framework 3.5 (SP1) using the tool, reinstalling .NET Framework 3.5 will also install .Net Framework 2.0 SP2 and 3.0 SP2; then Windows Update will offer .NET Framework 3.5 SP1.

IMPORTANT! => If you remove .NET Framework 3.5 (SP1), reinstall your .NET Framework versions in the following order:

    1. .Net Framework 3.5, then...
    2. .Net Framework 1.1, then...
    3. .Net Framework 1.1 SP1

NB: KB923100 references this page: http://blogs.msdn.com/astebner/archive/2006/05/30/611355.aspx.  Please read ALL of it as well as the related page http://blogs.msdn.com/astebner/pages/8904493.aspx before using the .NET Framework Cleanup Tool.

Step #3 => Check-in at Windows Update and install any critical security updates offered.

tried that now i recieve:
[12/07/09,17:44:15] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/07/09,18:04:45] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/07/09,18:05:09] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/09/09,09:43:17] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/09/09,09:43:32] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/09/09,12:06:54] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/09/09,12:07:09] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/09/09,12:09:20] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/09/09,12:09:39] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/11/09,14:48:34] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/11/09,14:48:56] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/11/09,15:38:26] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/11/09,15:38:50] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/11/09,15:49:00] Microsoft .NET Framework 3.5 (x64) 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 (x64) 'package'. MSI returned error code 1603
[12/11/09,15:49:16] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 (x64) 'package' is not installed.
[12/11/09,16:12:03] Microsoft .NET Framework 3.5 (x64) 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 (x64) 'package'. MSI returned error code 1603
[12/11/09,16:12:18] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 (x64) 'package' is not installed.
[12/11/09,19:19:30] Microsoft .NET Framework 3.5 (x64) 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 (x64) 'package'. MSI returned error code 1603
[12/11/09,19:19:45] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 (x64) 'package' is not installed.
[12/11/09,20:01:57] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1084
[12/11/09,20:02:13] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/12/09,12:16:08] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/12/09,12:16:30] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.
[12/12/09,12:27:33] Microsoft .NET Framework 3.5 (x64) 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 (x64) 'package'. MSI returned error code 1603
[12/12/09,12:27:50] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 (x64) 'package' is not installed.
[12/12/09,14:14:43] Microsoft .NET Framework 2.0SP1 (x64) (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (x64) (CBS). MSI returned error code 1
[12/12/09,14:15:00] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (x64) (CBS) is not installed.

any ideas?

tried again this time installing 3.0 and recieved this
[12/11/09,21:03:26] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147023293.
[12/11/09,21:22:49] MSXML 6.0 Parser [x64]: [2] Error: Installation failed for component MSXML 6.0 Parser [x64]. MSI returned error code 1618
[12/11/09,21:22:57] WapUI: [2] DepCheck indicates MSXML 6.0 Parser [x64] is not installed.
[12/12/09,08:05:17] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147023293.
[12/12/09,09:32:20] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147023293.
[12/12/09,10:57:21] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147023293.
[12/12/09,14:43:38] MSXML 6.0 Parser [x64]: [2] Error: Installation failed for component MSXML 6.0 Parser [x64]. MSI returned error code 1618
[12/12/09,14:43:48] WapUI: [2] DepCheck indicates MSXML 6.0 Parser [x64] is not installed.

Please state your full Windows version (e.g., WinXP SP3; WinXP 64-bit SP2; Vista SP1; Vista 64-bit SP2; Win7; Win7 64-bit).

Please state all of the .NET Framework versions that you uninstalled or which were removed using the .NET Framework Cleanup Tool.

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~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft

its  windows vista 64bit == i removed .net 4.0
when installing a program i recieved:
Component .NET Framework 3.5 SP1 has failed to install with the following error message:
"Incorrect function. "

Are you running Vista 64-bit SP1 or SP2 or are no Service Packs installed? [pick one]

You only "removed" .NET Framework 4.0? [yes/no]

Was it .NET Framework 4.0 Beta 1 or Beta 2? [pick one]

Did you remove it via Add/Remove Programs or using the .NET Framework Cleanup Tool? [pick one]

Is Visual Studio 2010 Beta 2 installed? [yes/no]

Which Windows Update failed to install with a 0x643 error? [state KB number; e.g., KB951847, KB953300]

What .NET Framework versions are currently installed? [list all]

     How to determine which versions of the .NET Framework are installed and whether service packs have been applied
     http://support.microsoft.com/kb/318785

Did you write down which .NET Framework versions were installed before you "removed" .NET Framework 4.0 via Add/Remove Programs or before using the .NET Framework Cleanup Tool? [yes/no]

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~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft