Check your Windows Update GPO’s and deactivate ‘Do not connect to any Windows Update Internet location‘
Don’t worry. It’s a stupid bug. https://blogs.technet.microsoft.com/sus/2008/09/18/wsus-clients-fail-with-warning-syncserverupdatesinternal-failed-0x80244010/ Do it again. And again. And again. :) It will work at some point. ;) OR do gpupdate /force and reboot.