Code 646 for Windows Vista on Office 2003 Security Updates
In trying to simply run update through Windows Vista Home Premium (64-bit, AMD processor) Microsoft says that the Office 2003 suite needs the updates below. Windows update runs but fails to install these updates, instead returning this error message, "Code 646 Windows update encountered an unknown error."Anyone got clues on how to solve this?This particular box has Norton 360 installed, but even disabling the firewall and AV doesn't solve the problem."Security Update for Microsoft Office 2003 (KB972580) Download size: 1.2 MB You may need to restart your computer for this update to take effect. Update type: Important A security vulnerability exists in Microsoft Office 2003 that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves the vulnerability so that Microsoft Office 2003 documents are handled appropriately. More information: http://support.microsoft.com/kb/972580 Help and Support: http://support.microsoft.com/?LN=en-us Security Update for Microsoft Office 2003 (KB974554) Download size: 829 KB You may need to restart your computer for this update to take effect. Update type: Important This update resolves a problem that can cause programs that use the Outlook View Control with Forms 2.0, such as Microsoft Office Outlook with Business Contact Manager, to stop functioning as expected after Security Update for Microsoft Office Outlook 2003 (KB973705) is installed. More information: http://support.microsoft.com/kb/974554 Help and Support: http://support.microsoft.com/?LN=en-us Security Update for Microsoft Office Excel 2003 (KB973475) Download size: 4.9 MB You may need to restart your computer for this update to take effect. Update type: Important A security vulnerability exists in Microsoft Office Excel 2003 that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability. More information: http://support.microsoft.com/kb/973475 Help and Support: http://support.microsoft.com/?LN=en-us Security Update for Microsoft Office Outlook 2003 (KB973705) Download size: 4.8 MB You may need to restart your computer for this update to take effect. Update type: Important A security vulnerability exists in Microsoft Office Outlook 2003 that could allow arbitrary code to run when a maliciously modified web page is opened. This update resolves that vulnerability. More information: http://support.microsoft.com/kb/973705 Help and Support: http://support.microsoft.com/?LN=en-us Security Update for Microsoft Office Word 2003 (KB973443) Download size: 5.6 MB You may need to restart your computer for this update to take effect. Update type: Important This update resolves a vulnerability, that exists in Microsoft Office 2003, that could allow arbitrary code to run when a maliciously modified file is opened. More information: http://support.microsoft.com/kb/973443 Help and Support: http://support.microsoft.com/?LN=en-us Update for Microsoft Office Outlook 2003 Junk Email Filter (KB975958) Download size: 3.4 MB You may need to restart your computer for this update to take effect. Update type: Important This update provides the Junk E-mail Filter in Microsoft Office Outlook 2003 with a more current definition of which e-mail messages should be considered junk e-mail. More information: http://support.microsoft.com/kb/975958 Help and Support: http://support.microsoft.com/?LN=en-us
November 19th, 2009 10:57pm

I am getting the same error, and no one seems to know how to fix the problem
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July 3rd, 2010 6:32am

I experiencing the same problem
September 18th, 2010 1:57pm

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