Download signatures - Error (after hibernate)

I’ve noticed recently that often I get the “error” message on “Download signatures”, if I run Update a few minutes after waking the computer up from hibernation:

Is this a coincidence (so it just happens to be some transient issue on the server side at that time) or not? Although it is quite consistent, i.e. after waking from hibernation, either on Windows 7 or Windows 10… but it doesn’t happen each time, and it didn’t use to happen before, say, until a month or two ago.
If I wait for a while, the update goes through.

Hi Max2015,

Thank you for reporting, We will check this issue.