How to Restore Hidden Updates(Windows® XP)
  1. Access Microsoft Update from the following URL:
    http://update.microsoft.com/microsoftupdate

  2. Click Custom button.
  3. Once the available updates are displayed, click Restore hidden updates placed on the left side of the page.
  4. From the list under Restore hidden updates, please select the updates you wish to install.
  5. Click Restore button.


How to Apply Security Updates Manually
  1. Access Microsoft Update from the following URL:
    http://update.microsoft.com/microsoftupdate

  2. Click Custom button.
  3. Once the available updates are displayed, make sure that "Security Update for Windows Media Player (KB2834904)" is included in the available updates and click Install Updates on the left side of the page.
  4. Click Review and install updates button.