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Configuring Mozilla Firefox for Dynamics NAV Clients

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This topic describes how to configure Mozilla Firefox web browser to work with the Microsoft Dynamics NAV Web client. To open the client, Firefox must be configured to allow cookies and JavaScript. In addition, the address of the Microsoft Dynamics NAV Web client must be configured as a trusted unified resource identifier (URI) in Firefox.

Enabling Cookies in Firefox

Cookies are small files that are stored on your computer. Cookies contain small amounts of data that is specific to a website, or in this case, the Microsoft Dynamics NAV Web client.

To enable cookies in Firefox

  1. Open Firefox.

  2. At the top of the browser window, choose the Firefox button, choose Options, and then choose Options again.

  3. Choose the Privacy tab.

  4. Under History, set the Firefox will box to Use custom settings for history.

  5. Do one of the following.

    If you want to Then
    Allow cookies from all websites 1. Select Accept cookies from sites.
    2. Choose the OK button.
    Allow cookies only from the Microsoft Dynamics NAV Web client site 1. Select Exceptions.
    2. In the Address of the website box, type the address of the Microsoft Dynamics NAV Web client, for example: https://myNAVServer:8080//DynamicsNAV110 or https://myNAVServer:8080//DynamicsNAV110/WebClient (for Microsoft Dynamics NAV 2017 and earlier versions).
    3. Choose Allow.
    The Microsoft Dynamics NAV Web client address appears in the Site list.
    4. Choose Close, and then choose the OK button.

Enabling JavaScript in Firefox

JavaScript is a programming language for making web pages interactive.

To enable JavaScript in Firefox

  1. Open Firefox.

  2. At the top of the browser window, choose the Firefox button, choose Options, and then choose Options again.

  3. Choose the Content tab.

  4. Select the Enable JavaScript check box, and then choose the OK button.

Configuring the Microsoft Dynamics NAV Web Client Address as a Trusted URI in Firefox

If the Microsoft Dynamics NAV Web client is configured to use Windows authentication, then to open the Microsoft Dynamics NAV Web client from a computer other than the computer that is running the Microsoft Dynamics NAV Web Server components, you must add the Microsoft Dynamics NAV Web client address to the trusted URI list in Firefox. Otherwise, you will receive one of the following errors when you try to open the Microsoft Dynamics NAV Web client.

A server error occurred, and the content cannot be displayed. Refresh the page or open a new browser window.

401 - Unauthorized: Access is denied due to invalid credentials.

There are two different trusted URI lists that you can add the Microsoft Dynamics NAV Web client address to: network.negotiate-auth.trusted-uris and network.automatic-ntlm-auth.trusted-uris. The list that you use will depend on the authentication provider that is used by the website that is running the Microsoft Dynamics NAV Web client. Use the following guidelines to determine which list to use:

  • If the website uses the negotiate authentication provider, then add the Microsoft Dynamics NAV Web client address to the network.negotiate-auth.trusted-uris list.

    The negotiate authentication uses Kerberos authentication if it is configured on clients. If the Microsoft Dynamics NAV Web Server components and Microsoft Dynamics NAV Server are running on separate computers, then add the address to this list.

  • If the website uses the NTLM authentication provider, then add the Microsoft Dynamics NAV Web client address to the network.automatic-ntlm-auth.trusted-uris list.

  • If you do not know which authentication provider is used, then add the Microsoft Dynamics NAV Web client address to both lists.

To configure the Microsoft Dynamics NAV Web client address in Firefox

  1. Open Firefox.

  2. In the address box, type about:config.

  3. To add the address to the network.automatic-ntlm-auth.trusted-uris list, do the following:

    1. In the Search box, enter network.automatic, and then double-click the line network.automatic-ntlm-auth.trusted-uris.

    2. In the Enter string value dialog box, type the address that you use to open the Microsoft Dynamics NAV Web client, for example, https://myNAVServer:8080//DynamicsNAV110 or https://myNAVServer:8080//DynamicsNAV110/WebClient (for Microsoft Dynamics NAV 2017 and earlier versions).

    3. Choose the OK button.

    Note

    If there is already an address in the box, separate the existing address and the Microsoft Dynamics NAV Web client address by using a comma.

  4. To add the address to the network.negotiate-auth.trusted-uris list, do the following:

    1. In the Search box, enter network.negotiate, and then double-click the line network.negotiate-auth.trusted-uris.

    2. In the Enter string value dialog box, type the address that you use to open the Microsoft Dynamics NAV Web client, for example, https://myNAVServer:8080//DynamicsNAV110 or https://myNAVServer:8080//DynamicsNAV110/WebClient (for Microsoft Dynamics NAV 2017 and earlier versions).

    3. Choose the OK button.

  5. Close and restart Firefox.

See Also

Microsoft Dynamics NAV Web Client
How to: Configure Authentication of Microsoft Dynamics NAV Web Client Users
System Requirements for Microsoft Dynamics NAV
How to: Configure Internet Explorer for Microsoft Dynamics NAV Clients