I have windows 7 home premium 64bit. Some updates will not install, I keep getting update failed. It all stared a few weeks back with KB 2644615 now two new updates have done the same thing, KB 2667402 and KB 2639308. I downloaded the windows update readiness tool, but that did not help. Microsoft then recomend that you do an upgrade with your installation disc, I tried that, everything went well untill the final bit after you put in your window key and fix all your settings. The computer froze on the final screen when I assume it is meant to boot up, I left it for 4 hours but it did nothing. I had to reinstall windows from a disc image(God bless you Acronis) Anyone got any ideas as to why most updates install but some won't, or do I just forget about them Don't really want to do the upgrade thing again and have the same problem.