I can't access to Windows Update v6

[WinFX]

I can't access Windows Update v6 from Windows Server 2003 x64 or Windows XP from today.

Internet Explorer 8 keeps looking for the domain as if it didn't exist, but pinging gives me results.

The catalog works perfectly.

PD: I don't tester in other OS.

Edited August 5, 2020 by WinFX

[IntMD]