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An application is blocked by the firewall, how can I change that?


Problem description

You cannot use specific applications like Internet Explorer, Outlook or another application that uses the Internet. When you disable your NSS firewall, the applications react normally again.

Follow this procedure to solve the problems with the firewall and the denied applications.


Cause of the blockade

A firewall is meant to block or allow the access to the Internet for applications. The firewall also blocks incoming connections to your computer, made by computers that are connected to the Internet.

If your firewall detects a change in any of the applications, it warns you about it and asks whether or not to grant the changed application access to the Internet.

The procedure described below will help you to change the state of denied applications to again allow them to access the Internet.


  1. Right-click the N icon to open a list of actions.

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  2. Choose Norman Security Suite:

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  3. Click the Personal firewall button on the left of the Security Suite window.
  4. Click the gray Configure button at the bottom.
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  5. Click the Rule editor button.

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    After clicking the button a wizard will be displayed.

  6. Click I want to modify or delete an existing rule.
  7. Click Next.

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  8. Select the application that seems to cause the problem.
  9. Click Next.

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  10. Click Change rule to allow, and then click Finish.

    The selected application is now free enter the Internet.


Keep in mind that you should only accept the applications that you are familiar with. Normally there should not be any issues with, for example, Internet Explorer or Outlook accessing the Internet, especially after installing Windows Updates.

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