Anyone knows why WUMT 1.0 under Windows XP fails preliminary scan both online an offline with code 0x800b0003 or 0x800B0100 after IE8 install? Update Agent 7.6 is installed and latest SHA-1 signed wsusscn2.cab is provided, and before IE8 is installed, everything works properly, can restart the machine and scan again, but after IE8 is installed, it fails. Funny, if IE8 is uninstalled, WUMT works again. Only if you have saved \Windows\SoftwareDistribution\Download folder from a previous online update copied over the new install, you also must provide SHA-1 signed wsusscn2.cab which I think it's from july 13.
Last version 07.01.2020 x64 -- not work with Win 10.1903 HOME. I mean - it doesn't disable searching updates and WIndows proceed searching drivers. .Alas. alas ....