While Avast is a strong anti-exploit software for malicious applications/processes and websites, its firewall may sometimes trigger outgoing communication issues.

What causes Avast Firewall to block network share?

Some of the reasons why the Avast firewall triggers data traffic sharing issues over the network, or blocks the printer are:

A glitch in the configuration – When an application starts for the first time, the Firewall creates a new rule for it, that controls the application. Known bug in the local host – The bug usually enables the port/HTTPS scanning feature and that may trigger the issue. Firewall profile settings – A change in the Avast Firewall settings deliberately or accidentally may block a port or a program, or even n network sharing.

Fortunately, we know a few workarounds that will help you resolve the Avast Firewall blocking network share issue.

How do I fix Avast Firewall blocking network share?

Before you try the primary troubleshooting methods, you may try the following:

Check if your internet connection is working fine. Try and repair Avast as explained in this post and reboot (also applicable to Windows 11). Check if it’s a router problem.

1. Disable HTTPS scanning in Avast Firewall

Now, check if the Avast firewall is still blocking network share or if the issue is resolved. But if you are unable to turn on the firewall in Avast, you can fix it easily.

2. Change the Firewall network rules 

Now, check if network sharing is working or firewall is still blocking it. Is your Avast antivirus blocking the remote desktop? Changing the firewall network rules is also applicable in this case as explained in our detailed post.

3. Configure the Avast Firewall settings

Once you have made the changes successfully, the Avast firewall should not be blocking network share anymore. SPONSORED But, if it’s your Windows Defender Firewall rule that’s blocking your connection, we have some quick troubleshooting methods.

4. Add exceptions to the Avast firewall

5. Disable Avast temporarily

You may also stop the Avast secure browser from opening on startup if you suspect it’s instead a virus causing an issue with your PC and network sharing.

Does Avast interfere with the internet connection?

Avast does not block the internet, but it can sometimes block file downloads, or certain web pages that it may suspect as malicious. In such cases, apart from following the above methods, you can also update Avast to the latest version as shown below: Once done, restart your PC and check if the issue is resolved. At the same time, make sure that you follow our detailed guide to allow programs through Avast Firewall to make sure that it’s not blocking network share. Alternatively, you can also turn off the Avast Firewall, reinstall the software, or contact their customer support for further assistance. For any other queries related to Avast, you can feel free to let us know in the comments section below.

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