The steps in this guided walk-through should help with all Windows Update errors and other issues. This guided walk-through provides steps to fix problems with Windows Updates, such as taking a long time to scan, or error codes while installing updates. I've run the troubleshooter a few times, but still fails to update and i don't see any error code showing either. Primary drive is 1tb with 782gb free.so loads of space. A couple of days trouble free pc use.then it started all over again! I've been on MS support, downloaded the Windows Download Troubleshooter, let it scan. I'm running Win 8.1 and recently been getting onscreen message about 'couldn't complete update - undoing changes'. I'd appreciate some help on this as i am not that 'pc literate'. 'We Couldn't Complete The Update Undoing Changes' on 8.1 NO ERROR CODE
