AVG Firewall blocking virtual machine

Quick tip for those of you using AVG Firewall. I ran into an issue where, after installing AVG, my VMWare virtual machine would not longer connect to the internet. Windows still showed a connection and I could still ping (both by IP and domain names), but when I open a browser to load a web page, nothing happened.

At first I didn’t realize it was AVG that was causing the issue (it’s been a while since I last used my VM so I didnt make the connection right away). But some simple troubleshooting narrowed it down (set firewall to “Allow All“) and boom, internet started working right away.

Once I knew AVG Firewall was blocking the virtual machine, I figured it would be as simple as adding an exception in the firewall, but that didn’t work either.

Turns out the fix was even easier than adding an exception (although its slightly hidden).

First open AVG and click on Firewall.

avg-firewall

The in the bottom right hand corner, click the gear icon to access the firewall settings. In the next window that pops up, click Expert Mode.

avg-expertmode

In Expert Mode, click Advanced on the right. Put a check in the box that says “Allow any traffic from/to virtual machines supported by firewall“. Apply. And you should be all set!

avg-allowvirtualmachines

Granted, I don’t know exactly which VM Hosts are supported by this option, but I can vouch┬áthat it works with VMWare products!

2 thoughts on “AVG Firewall blocking virtual machine”

Leave a Reply