This should work.
Type in " services.msc " in search. when screen comes up, look for windows update
click on STOP. you want it to turn off.minimize this screen.
go to my computer and click on C drive, click on windows folder and look for " SoftwareDistribution " folder.
delete it or rename it somethinese ( example: Software DistributionOld" once youhave done this, retuen to services screen which you minimized and start the Windows update again. then try updating, it should work.