Cumulative Update 04 for Microsoft Dynamics NAV 2017 has been released

Cumulative Update 04 includes all application and platform hotfixes and regulatory features that have been released for Microsoft Dynamics NAV 2017.

The cumulative update is intended mainly for solutions that are experiencing the problems described in the Knowledge Base article linked to below. However, you are advised to always keep your solution updated with the latest cumulative update. If you are in doubt about whether this cumulative update addresses your specific problem, or if you want to confirm whether any special compatibility, installation, or download issues are associated with this cumulative update, support professionals in Customer Support Services are ready to help you. For more information, see

The cumulative update includes hotfixes that apply to all countries and hotfixes specific to the following local versions:

Where to find Cumulative Update 03

You can download the cumulative update from KB 4014101  – Cumulative Update 4 for Microsoft Dynamics NAV 2017.

You can press one of the countries in list above for a direct download or you can download the cumulative update from the Microsoft Download Center.

To learn more about other Cumulative Updates already released for Microsoft Dynamics NAV 2017 please see KB  3210255.


Before you install a cumulative update in a production environment, take the following precautions:

  1. Test the cumulative update in a non-production environment.
  2. Make a backup of the system or computer where the cumulative update is to be installed.

Additional Information

For information about how to install the cumulative update, see How to Install a Microsoft Dynamics NAV 2017 Cumulative Update.

Comments (10)

  1. Small typo.. “Where to find Cumulative Update 03” 🙂

  2. Neville Foyn says:

    I think there may be a memory leak in the 2017 CU4 version, I have it running in a non-production environment, there are currently no users on the system, and the memory slowly counts up at about 0.1 megs every second or two until the server starts complaining about RAM (Which happens at just under 3 gigs used by the NAV service on this test box)
    Happy to send additional detail or make the instance available for remote login if you want to have a look (it is in azure)

    1. navteam says:

      Hi Neville,
      The team is looking into this right now. We might contact you directly later.

      1. Nicolai Hansen says:

        Any news on this? All NAV 2017 instances we have installed are using 900+ MB RAM, even the instances that no one has ever logged on to.

    2. Tim Hart says:

      We found memory leaks with NAV CU3 and Windows Server 2016. Using 2012R2 instead resolved the issue.

      1. A.Ba says:

        Does anyone know if the same behavior occurs also with CU4?

        1. Hi,

          we have the same issue with one of our client and we have upgraded the application platform to CU4 but it does not work.

          Any idea whether to downgrade to 2012R2 Server or wait for Microsoft to give us some solution ?

      2. Hi,

        you might have received Windows Update recently.

        Our problem was resolved after installing the windows update from MS.

        That might help you as well 🙂

  3. navteam says:

    Hi everyone,

    We’ve been busy testing and verifying the reporting issue of a potential memory leak. We have determined that the issue is caused by a memory leak in MSVCR120_CLR0400.dll.

    Install the following Windows 10/Windows Server 2016 update KB: 4013429

    Once you have installed the update, you must restart the machine.

    1. Christian Czupras says:


      we still have the memory problem after the KB Update. But we are running NAV 2017 CU2.
      Do you know if the problem is solved if we update to CU4?

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