Windows firewall is blocking Quickbooks 2015 and 2016. What to do…?

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Windows firewall is blocking Quickbooks. Here is the fix…

Firewalls are notoriously known for blocking connection of other softwares. Due to connectivity issues, errors such as H202, H101, H303 and H305 may arise. It is indeed an arduous task to troubleshoot connectivity issues in QuickBooks. We have compiled a series of steps that can help you in configuring windows firewall so that it allows connection for QuickBooks through the network port.


These steps can only be used for configuring windows firewall. Third-party firewall software will have to be configured according to the steps prescribed by them. Sometimes the firewall set up by Internet Suppliers blocks the QuickBooks’ connection. To resolve this issue, you would need to get in touch with your internet vendor. You should ask them to allow QB’s connection through UDP port 16000. Also, make sure that your antivirus and anti-malware aren’t blocking the connection.


Follow these steps to allow connection for QuickBooks through windows Firewall:

  1. From the start up menu located on your desktop, select the control panel option.
  2. Choose to select windows firewall from the list of options.
  3. Select the option where it says “allow a program through firewall“. This you can find on the right hand side navigation panel.
  4. A new window will appear. Select QuickBooks and click ok.

Windows Firewall will allow all network connections for QB. Make sure to allow connection for both public and private networks. Users have frequently complained about QB not being listed on the list of programs for which users can customize firewall settings for. But if you are facing the same issue then request you to go through the following steps:


Part I

Allowing Inbound Connection through windows firewall for QuickBooks:

  1. Open Control Panel.
  2. Choose advanced security for windows firewall. You can navigate through this option by searching or by opening Windows Firewall. This option is provided on the left navigation panel.
  3. In the new window, on the left panel, click on Inbound.
  4. On the right-hand side panel, choose the “New Rule” option. Right click on it to select open file option. These rules are the benchmark according to which windows firewall works. By changing these rules or by creating new ones, users can easily alter the way firewall works for a particular program.
  5. Select the radio button against Program. It is important to do so as the rule will be set for the executable.
  6. To enter a custom path, select ‘This Program Path.’ Browse to the correct location and select the executable for QuickBooks or any of its services and hit ok.
  7. Click next and mark the radio button against ‘Allow the connection.’
  8. Windows firewall enables you to type in a custom name and a description for this new rule. The name of this rule will be required if you want to modify it in the future.

Part II

  1. Open Firewall advanced Security
  2. Click on Outbound
  3. Follow steps 4 through 8 of setting inbound rules.
  4. Click Ok.

Unless some other software is blocking the connection, you will now have complete access through your network port. You can try switching off the firewall, though this option isn’t recommended.


Contact Us

Hope you are able to resolve your issue, but if you are still facing the problem or have any other problem then get in touch with our QuickBooks support team at @ 1800-940-7442. Our Quickbooks proadvisor will look into the matter and will help you resolve your problem.

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