For the last 3 builds I have had major windows update issues. I have the same problem on 2 Win10 machines. Its not my network because all my Windows 8.1 machines update just fine. I have done multiple clean installs. When I do a clean install windows update will run one time but is so slow that it takes hours to download windows defender definitions. Thereafter windows update throws out an error (different ones)or it will just sit there checking for updates for hours without any results.
I've tried the troubleshooter without any result. I'm pretty tech savvy and fix computers for a living but this is about to drive me nuts. I've fixed every kind of update issue in other versions of Windows but I cannot use normal troubleshooting in Win10 like renaming software distribution, etc because to do so I have to get into safe mode and safe mode doesn't work either. Anyone have any suggestions?