Update KB973688, updates fail, code 643

Update KB973688, update for Microsoft XML core services 4.0 service pack 2 for x64 bit based systems. I can not install, I get error code 643. I am running Windows 7 Enterprise.


Question Info

Last updated March 25, 2018 Views 1,391 Applies to:

Hi allent2,

Welcome to Microsoft Answers community.

I would suggest you to follow the steps provided in the below article and check.

If still the same issue persists then try the below methods.

Method 1. For the error message, please see the article below as it seems to be a known issue.
MS08-069: Description of the security update for XML Core Services 4.0: November 11, 2008
Method 2.
To work around this problem, manually install the security update from the Microsoft Download Center, and then click Ignore when the error message is displayed.
Download standalone package of this update from the link below and install.
Method 3. To confirm that the installation was successful, verify that the version of the Msxml4.dll file in the %SystemRoot%\System32 folder is 4.20.9870.0.
See if this helps.
If this doesn't help, you may try resetting Windows update components and reinstall it again.

Click the Fix it provided in the link below to do it.
How do I reset Windows Update components?

Hope this information is helpful.
Let me know if this worked.

Thanks and Regards:
Umesh P - Microsoft Support

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