Windows Update error Code 8007643

Question

I am having probles installing upgrades.  I get a message that Windows has encountered an unknown error and to try again later.  I have tried quite a few times over a week but still cannot instal upgrades

Answer 1

See if this sugesstion can help you:

<*http://social.answers.microsoft.com/Forums/en-US/vistawu/thread/4a6ea38b-9104-4547-8802-bc94bb6127a9*>

Answer 2

Security update for Microsoft Office Power Point 2007 

I have followed your instructions but still cannot instal the Security Update for Microsft Office Power Point 2007 (KB982158).  I get a message "Instalation failed and that "problem caused package to stop working.  Windows checking for Solution.

It goes through the whole installation process and at the end I get the above message.   HELP

Answer 3

Download and install the standalone version: Security Update for Microsoft Office PowerPoint 2007 (KB982158)

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Carey Frisch

Answer 4

Cannot instal Security Update for Microsoft Office Power Point 2007 (KB982158).  Get report that 'INSTALATION FAILED'

Answer 5

Hi Elbond14:

You refer to that Windows has encountered an unknown error...but your post title refers to error code 8007643... Which is it?

The error 80070643 (or simply 0x643) that shows up when using the Microsoft/Windows Update system, as the result of an unsuccessful install of an update (or updates that may be re-offered) for any version of the .NET Framework installation on your system, can happen for several reasons.

The most common cause is a problem due to system corruption on your computer. This occurs for various reasons, including but not limited to other applications overwriting of .NET files or corrupted hard disk sectors.

To troubleshoot this problem, you must fix MSI software update registration corruption issues (Method Nº1), or uninstall and reinstall multiple versions of the .NET Framework installation (Method Nº2). Both methods are described in Microsoft Knowledge Base article KB976982: "You receive error 0x643, error code 0x80070643 or updates may be re-offered when you try to install .NET Framework updates when using Windows Update or Microsoft Update" (http://support.microsoft.com/kb/976982 )

Try Method 1 first. If the problem is solved and you have the updates successfuly installed, you are done!  If the issue is not resolved, go to Method 2.

When you get to step 4 of Method 2 (Download and Reinstall) **** install the .NET Framework3.5 SP1 only (this will also install versions 2.0 SP2 and 3.0 SP2 behind the scenes) as you might not need version 1.1 anyway, because most applications that were created for the .NET Framework 1.0 or 1.1 will automatically use the .NET Framework 2.0 instead if it is installed on the system. In most cases, that means you do not need to keep the .NET Framework 1.1 installed on your system if you already have the .NET Framework 2.0 installed.

You can now go to Microsoft/Windows Update to check for any available service packs or hotfixes for the .NET Framework version that you have just installed. If there is any service pack, hotfix or update available for your system, it is recommended that you download it from the Microsoft Download Center, and install it by running the setup package directly instead of using Windows Update. Running it directly will allow the service pack or hotfix to display error dialogs whereas Windows Update will automatically suppress any error dialogs.

Hope this helps. Don't forget to come back and tell us how it went.

RickCP

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RickCP-Windows XP Home Edition SP3