If you are seeing the error, Windows Update 80072efd error, message when you are checking online for updates, it might have been caused due to a huge number of update requests on your windows update serves. You can handle this situation by closing the Windows Update, and wait for about five to ten minutes, and then restart running the Windows Update once again. If you continue to get the Windows Update 80072efd error message even after this, it is likely that the Windows Registry has been corrupted and you have to attend to this on an urgent basis.
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