When I try to update virus database, it stops several times and I have to click update again for many times. Especially when updating the first time but also when it haven’t been updated for a week or two (too many update files? )
For some reason it just stops downloading updates.
Network works normally and speed is 100/5 M (or that is what we pay for 
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EDIT: ■■■■ the “Cisco EPC3825 EuroDocsis 3.0 Gateway”. Its firewall sucks. When I disabled it, updating worked well (I tried several times by enabling and disabling it).