Windows update error 0x80070643

You need to increase the size of the Recovery partition. Use Partition wizard home edition. Increase it 1gig.

Microsoft goes through many steps and they are missing steps. So don’t use these instructions from Microsoft https://support.microsoft.com/en-us/topic/kb5028997-instructions-to-manually-resize-your-partition-to-install-the-winre-update-400faa27-9343-461c-ada9-24c8229763bf. They should have told you before deleting the original Recovery Partition you should copy from the Recovery partition the Winre.wim into the c:\windows\system32\recovery folder.