host unreachable during manual update

1 week ago avast did not up dates its virus definition automatically so I tried to update it manually however, it kept saying host unreachable or unknown error.

After many tries and amost 1hr later I come to the convulsion that its not going to update, so I disconnected it and tried 1 week later, I manually updates it and it constantly shows the following text:

	[100%] Downloading.......(don't remember exact text)...vps
	[100%]host unreachable
	Downloading.........940-941...vps
	Host unreachable
	Downloading.........940-941...vps
	Host unreachable
	[100%] Downloading......ccd-cca...vps

After sometime it says updated successfully…is this normal?

Btw the 2nd time it wasn’t able to update automatically is because a few minutes after the PC connected to the internet the router was switch off by someone I have to on it again and wait for the router to startup. So I assume it would not update automatically this time round since it has tried and was unable to connect so I tried to update manually.