Hello Boggin, after trying every script, tips, cab files, registry cleanup and all appertaining fixes to W10 not updating cumulative updates I decided today to try the MS Media Creation Tool. As it appears that if one already has a version of W10 on their system the tool gives a choice of installing an update or making a W10 copy onto a USB etc for installing on another computer. I ticked the UPDATE and KEEP MY OWN FILES boxes and the result is that Winver is now 14393.321 and on the final restart all the icons that were selected to appear on the task bar did so. I did a power down and boot up again and searched for further updates. This resulted in Flash Player KB3194343 and Windows update KB3199209 (both not requiring restart) being installed so problem resolved. I will not add SOLVED to header as I an not the originator of the entry.