I also have this problem with the same error code and have tried the system readiness tool (no change) as well as the A.bat file and ran that (no change). I am still getting Windows Defender updates through Windows Update, but there is no install history
other than the system readiness tool I dowloaded. My update stopped working a couple of months ago.
I am on Windows Vista Home Premium 2(4)GB Ram Dual Core and update has worked previously but this has happened twice now and the first time I had to reinstall windows which then emptied my hard drive of all of my files and programmes as normal - I don't want
to do this again as it tkaes a long time to return the PC to normal.
Is there any more ideas other than the system readiness tool option and the A.bat fix menioned above?
Thanks a lot