DELL System Update (DSU) service down

Hi,

from several days, on all my customers' servers, when I launch the dsu.exe command, I receive this error:

C:\Users\Administrator>dsu
DELL System Update 2.1.1.0
Copyright (C) 2014 -- 2024 DELL Proprietary.
Downloading the Index catalog
Extracting C:\ProgramData\Dell\DELL System Update\dell_dup\CatalogIndex.cab
Reading the Index catalog
Downloading the catalog
Unable to download the catalog. Check the network connection
Progress report is available at: C:\ProgramData\Dell\DELL System Update\dell_dup\DSU_STATUS.json
Exiting DSU!

I tryed on 10 different servers. Same error.

Thank you.

Lorenzo