Avast blocking network printing

crobertson · 2017-02-02T16:43:23.000Z

Using endpoint protection, Avast is blocking our network printer. It shows as “offline” We can turn off the Avast and in a few seconds it shows back up online. It also blocks our main application. I’ve put the path in both the firewall settings and exclusions, but no success.

Mac · 2017-02-13T11:46:50.000Z

If you disable just the avast Firewall shield does it allow your application and printer?

From the client please post a screenshot of the firewall rules you have and we can assist in getting them adjusted to allow this.

Cheers,
Mac

system · 2017-04-13T19:38:36.000Z

Hello,

Another one here. I updated my virusscanner and now the firewall does his utmost to stop me from using a network printer:

Step1: I turned off my wirewall to be sure for ten minutes, suddenly printing worked again. Firewall is set to private (screenshot Firewall 1)
Step2: To try to get printing to work WITH a functioning Firewall, I went in settings (this is a Dutch language Avast version BTW), clicked on Internet Connection Sharing
thanks to a tip on this forum (screenshot firewall 2: ICS translates to “Modus internet verbinding delen”. It seemed to work

Step 3: Alas, it only SEEMED to work, as now the Firewall is AGAIN blocking my printing. When I look in trusted adresses (vertrouwde adressen there is a range of 192.168.1 adresses that SHOULD allow me to print (see screenshot firewall3) because my printer has an adress in that range. But still i get blocked

Step4(?) Almost at my wits end, but I think I stumbled on something. Remember screenshot Firewall2? First I ticked the last box in the row (allow connections with friends or vertrouwde adressen)
after that I clicked on System rules (or systeem regels) and clicked the first box about allowing remote printing (see firewall4)

It ALMOST looked like I had it. But no, printer stopped halfway through, went through the same DAMN routine again of NOT printing anything. I give up, gonna buy a 2 euro printer cable, because after five years of working like a charm, network printing seems to have become unavailable :-\ Unless someone here can mention something I have forgotten?

Pondus · 2017-04-13T19:45:49.000Z

This has worked on home versions, don’t know about endpoints

try turn off port scan

Avast UI → Protection → Firewall → Settings → Advanced → Uncheck “Enable automatic port scan detection”

Did that work?

system · 2017-04-13T20:06:00.000Z

Ahaaaa!

For now, it did work, so quickly print everything on the backlog (dunno if it still works tomorrow)

Mac · 2017-04-22T18:06:42.000Z

I believe this is in the works to be fixed permanently

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