I encountered this error on several Windows 10 PCs and after a week of investigations, I discovered the problem. This error is reported when the recovery partition in your system disk is too small. The solution The solution is to resize it to 900 Mb, or even better to 1 Gb. A task that usually involves two sibling partitions, and that requires a good amount … Continue reading HOWTO fix Windows Update error 0x80070643 »