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Legacy Update Help

Security Update for Windows XP (KB2686509) installation issues

This update is unusual, and is notorious for failing to install. The update is slightly different between standard Windows XP and Windows Embedded 2009, so if you’ve selected to receive Embedded 2009 updates on XP, the incorrect version of this update will be downloaded.

Despite the name, this update is not a security fix. Its purpose is questionable, as it only creates a log file containing listing vulnerable keyboard layouts on your system. It does not address the underlying security issue, which is fundamental to how Windows XP’s registry is constructed - in fact, the issue largely remains unsolved in current versions of Windows. More information can be found in the Microsoft Support article, and this discussion thread.

To fix this, manually download and install the Windows XP variant of the update:

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If you still have issues installing this update, you may consider hiding it. Technical users may be interested to read the log files created by this update at C:\\Windows\\faultykeyboard.log.