Since the latest three Insider builds Windows Update fails all the time to download and update. If I go in the Update tab after the first 3-4 percentage it comes up with a generic error message and I have to restart (the update). I already tried running sfc /scannow and deleting the WU files & cache, but the issue keeps going. Now I am using UUP dump, but I would like to go the usual way. Any ideas what could be the cause of this issue?
What preview level/channel are you talking about? Beta, Dev or Release Preview? Yes you can create a new ISO and mount it inside the running build and run setup.exe and when this is successfully done WU should also work properly when the next updates are released.
Sorry forgot to mention that I am in the Dev channel and no I can't use Windows Update after that. And this is happening already since the latest three Insider updates (aka I can only manually update).