I'm an advanced level user here with an odd issue. I have two Windows Updates that are failing to install, every single time. I'm getting a mysterious "Code 1" error on both updates, an error for which I'm having difficulty finding a solution.

The updates in question are:

• Security Update for Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package (KB2538243)
• System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821) [May 2011]

Because these updates are failing, the Shut Down button in my start menu always has the shield icon next to it, indicating that "new" updates will be installed on shut down. But, of course, they'll fail and when the PC is restarted, the shield icon is still there.

When checking the update history and viewing the details of the failed updates, I get the following:

Security Update for Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package (KB2538243) Installation date: ?6/?29/?2011 3:00 AM
Installation status: Failed
Error details: Code 1
Update type: Important

A security issue has been identified leading to MFC application vulnerability in DLL planting due to MFC not specifying the full path to system/localization DLLs. You can protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.

More information: http://go.microsoft.com/fwlink/?LinkId=216803

System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821) [May 2011] Installation date: ?6/?28/?2011 3:00 AM
Installation status: Failed
Error details: Code 1
Update type: Important

This tool is being offered because an inconsistency was found in the Windows servicing store which may prevent the successful installation of future updates, service packs, and software. This tool checks your computer for such inconsistencies and tries to resolve issues if found.

More information: http://support.microsoft.com/kb/947821

About My System

I'm running Windows 7 Home Premium x64 Edition. This is a custom PC build and the OS was installed fresh, not an upgrade from a previous version. I've been running this system for about 4 months. Windows Updates aside, the system is usually quite stable.

Thanks in advance for your help!