How to Fix Avast Firewall Blocking QuickBooks Issue?

Is your Avast firewall blocking your QuickBooks Desktop? Are you having problems with the firewall interfering with QuickBooks? Then this […]

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Is your Avast firewall blocking your QuickBooks Desktop? Are you having problems with the firewall interfering with QuickBooks?

Then this article will provide you with all the details needed to fix the Avast firewall blocking QuickBooks issue. So when you are dealing with the QuickBooks accounting software, you need to go through the article in detail and fix the problem.

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Avast firewall blocking QuickBooks issue may display an error message like, Network diagnostics failed. Often it also displays messages like Disable exceptions firewall not defined. Fix problems and try again. The error notification gives a hint to solve the problem. It means that there can be connectivity issues or there may be device security problems that restrict the network between the Internet and QuickBooks.

To know more about the causes of this error, read on.

What causes Avast Firewall Blocks QuickBooks issue?

There are two possible triggers. We have listed them below for your reference:

Closed Ports: This error arises when the particular ports that are used by the application to use the Internet are not accepted by the computer. The particular ports accessed by the application should be passed by the given user in order for the application to function systematically. In contrast to other applications, QuickBooks never uses different ports, but a particular port is based on the application version that you are accessing.

Blocked by Avast Firewall: In a few cases, the application can get blocked by the Avast firewall. In some cases, it can also be that a third-party antivirus program has restricted the application permanently.

Now, when you have a decent knowledge about the problem and its elements, let’s move on to fix it.

How to Fix the Avast Firewall Blocking QuickBooks Problem?

Solution 1: Firewall Ports Configuration

It is imperative to configure the firewall ports to enable the application to use the Internet. It is possible to configure the ports automatically by first downloading and then installing the particular application. In case, you do not wish to do it automatically, the steps given below will help you:

Step 1: Open the particular QuickBooks Database Server Manager. Press on the Port Monitor tab. Press on the Port Monitor option.

Step 2: Take a note of the Port Number that is listed for the given application.

Step 3: To open the settings, press Windows + I. Press on Update and Security. Choose the Update & Security option.

Step 4: Choose the Windows Security tab present on the left side of the pane. Press on Firewall and Network Security option. Use the Firewall and network protection settings.

Step 5: Choose the Advanced Settings button from the given list.

Step 6: A new window will appear. Press on the option that says Inbound Rules. Choose New Rule. Press on Inbound Rule and choose New Rule.

Step 7: Choose Port and press on Next. Choose Port and press on Next.

Step 8: Press on TCP and choose the Specified Local Ports option. Press on TCP and check the option Specified Local Ports.

Step 9: Port numbers depend on the version that is accessed presently.

Step 10: Press on Next and choose the option Allow the Connection. Choose the option Allow the Connection.

Step 11: Press Next and ensure all the given three options are specifically checked.

Step 12: Press on Next and add a Name for the new rule.

Step 13: Press on Next. Once writing a name is over, press on Finish.

Step 14: For Outbound Rule, repeat the above process. Check the status of the issue.

Solution 2: Add a Firewall Exception

It is significant that the QuickBooks program has an exemption in the Firewall since sometimes the Windows Firewall can restrict the application completely even if the ports are open. Hence, in these steps, we will be introducing the QuickBooks program as an exemption to the Avast firewall.

Step 1: Click Windows + I in order to open the settings and press Update and Security. Choose the particular Update and Security option.

Step 2: Choose the Windows Security tab present on the left side of the pane and press on the option Firewall and Network Security. Choose Windows Security from the left side of the pane.

Step 3: Choose the button that says Advanced Settings from the given list.

Step 4: A new screen will be displayed. Press on the option Inbound Rules. Choose New Rule. Press on Inbound Rule and Press New Rule.

Step 5: Press on the program and choose Next. Check Program and press on Next.

Step 6: Check the option This Program Path. Press on Browse.

Step 7: Choose the path where the particular QuickBooks Program is installed.

Step 8: Press on Next after choosing the path. Check the option Allow the Connection. Choose the option Allow the Connection.

Step 9: Check all the given three options and press on Next. Check all the options.

Step 10: Enter a name for the given rule and press on Finish.

Step 11: Repeat the entire process for the Outbound Rule. Check the problem status.

Perform a Windows Restart

Regardless of whether you follow solution 1 or solution 2, perform a restart after it.

Step 1: Press on the Start menu.

Step 2: Now, press the Power button.

Step 3: Now, select the Restart option.

Step 4: Now wait for the restart to finish.

Step 5: After the restart, you are all set to go. You can continue to complete your task now.

Hope you have learned everything related to fixing the Avast firewall blocking QuickBooks. We have tried to add everything you need to know related to this topic.

If you still need assistance or any kind of technical help, you can reach out to our Dancing Numbers team. Our team identifies the issue in an instant and offers the best solution for it.

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What are the Different QuickBooks Connectivity Error Codes?

Here is the list of the QuickBooks connectivity error codes:

checked Error H505
checked H202
checked H303
checked H101

Not to mention, such errors are exposed via the QuickBooks client due to the firewall restricting the connection. Often it is very difficult to spot the mistake because of the windows firewall.

How to know if the Firewall is Restricting an Application or Not?

Here are the step to know if the firewall is restricting an application or not:

Step 1: Click Windows + R to open Run.

Step 2: Enter Management and press OK in order to open the Control Panel.

Step 3: Press System and Security.

Step 4: Press Windows Defender Firewall.

Step 5: On the left side of the pane, enable an application via the Windows Defender firewall.

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