Hi All,
Over the last few months more and more of our endpoint clients are failing to update with "Download of WindowsCloudNextGen failed from server http:∕∕dci.sophosupd.com∕update."
along with "The security health cannot be reported at the moment" under the endpoint Status.
Why has this started happening? It is probably 50-60 of our 100+ agents doing it. 
I've had similar problems for months now. I too get the "Download of WindowsCloudNextGen failed from server http://dci.sophosupd.com/update. I've opened multiple support tickets on this issue, and they have been absolutely ZERO HELP. All they keep coming back to is "make sure you have this list of domains/IP's white listed." THAT'S NOT THE ISSUE. The problem is intermittent, and I'm 99% sure it's a problem with Sophos Central. I can hit http://dci.sophosupd.com from my browser. The machines eventually do update themselves before failing again in the future. It is not specific to a particular VLAN or network.
However, unlike your situation I do not get the problem regarding health not being able to be reported. I've usually seen a reboot clear that up, but I've never seen it en-mass like you are.
I've had similar problems for months now. I too get the "Download of WindowsCloudNextGen failed from server http://dci.sophosupd.com/update. I've opened multiple support tickets on this issue, and they have been absolutely ZERO HELP. All they keep coming back to is "make sure you have this list of domains/IP's white listed." THAT'S NOT THE ISSUE. The problem is intermittent, and I'm 99% sure it's a problem with Sophos Central. I can hit http://dci.sophosupd.com from my browser. The machines eventually do update themselves before failing again in the future. It is not specific to a particular VLAN or network.
However, unlike your situation I do not get the problem regarding health not being able to be reported. I've usually seen a reboot clear that up, but I've never seen it en-mass like you are.
