WU Client failed searching for update with error 0x8024000b wuauclt and other questions about WSUS wuauclt commands to force reporting of status? wuauclt.exe /reportnow not working on Win10 WUAUCLT.exe vs. Check for Updates WUServer field Your WSUS server currently shows that no computers are ...
The other error (0x80190194) was a bit more obscure but it appears to be an IIS 404-type error seen when a virtual directory has been removed or is missing from the Default Web Site. The IIS console isn't installed on the box so I couldn't check the virtual directories and MIME type...