IvAp Install in P3Dv4 (revised-6)

Revised version-6 including installation images

You need the following files:

  • File #1:: FSUIPC5.dll
    (Download FSUIPC5.x from this site  | non-licensed works |)
  • File #2:: SimConnect.msi {C67A3A1B-F52B-42CC-85E8-231428A09312} >>
    this file is in your P3Dv4 folder x:\P3D4\redist\Interface\FSX-SP2-XPACK\retail\lib\
  • File #3:: the usual file from IVAO >> ivap-v2.0.2-b2773.exe

Assuming you created on a specific disk and/or installation folder for your Prepar3D version 4… say F:/P3D4/
where F: is the root of your P3D4 installation DISK (thus drive F) and
where /P3D4/: is the root of your P3D4 installation FOLDER (thus folder /P3D4/).
Now first define yours …
Before you go: do not install IvAp in the folder … \P3D4\ …
Before you go: do not install IvAp in the folder … \Program Files (x86) \ …

  1. Install File #1:: check before installation
    if a previous installation of version FSUIPC5.x is already present in the … /Modules folder,
    then you can skip this step 1,
    else install File #1 (FSUIPC5  – non licensed works).
  2. Install File #2:: SimConnect.msi (right mouse on the filename and install as administrator).
  3. Create a copy of the file Prepar3D.exe (it’s in the root of your P3D4 installation folder)
  4. Rename this copy to fsx.exe and leave it in the root of your P3D4 installation folder.
  5. Install File #3:: Right mouse click the file ivap-v2.0.2-b2773.exe and install as usual and (of course) as administrator in the root of your P3D4 installation _disk F:/IvAp_v2
    (This folder is created by the installation, so do not create this folder manually; just install in the root of your P3D4 installation disk )
    During the installation it will ask you to browse to the location where you created a copy of Prepar3D.exe >> fsx.exe. See again step 3-step 4.

    1. Again: do not install IvAp inside … \P3D4\ …
    2. Again: do not install IvAp inside  … \Program Files  (x86)\ …
    3. Exit the MTL process and/or the TeamSpeak process when these are already installed.
    4. Press Installation of IvAp for Prepar3D Version 4.x to read the installation images.

  6. IvAp Configuration: since the transponder codes can only be set in standby position, don’t forget to check in IvAp v2 – Configuration enable IvAp <-> FSUIPC SDK in the section 3rd Party Tools. See picture below.
  7.  Adding the IVAO_MTL entry in simobjects.cfg
    1. Open the file  simobjects.cfg in C:\ProgramData\Lockheed Martin\Prepar3D v4\
    2. Add this text:
      Title=IVAO MTL
    3. Save the file and check the presence of the folder in … \SimObjects
  8. Do not make additions or changes to the dll.xml since IvAp will be started in another way as follows:

  10. Manual Starting IvAp: press your Windows key and go to  the folder IVAO\
  11. Select the icon IvAp v2 – External | More and Run as administrator.
    1. 2nd (better) option: right mouse click the icon IvAp v2 – External and Add to Start, then open file location, select properties and check in the compatibility tab Run as administrator.
  12. After making CONNection and submiting your flightplan (ACARS-SEND FLIGHTPLAN) you will be visible in Webeye. Your flight results will be registered in the IVAO database.
  13. If you want IvAp started by the sim, add the following statement into the exe.xml. This exe.xml file resides in:
    C:\Users\yourname\AppData\Roaming\Lockheed Martin\Prepar3D v4\
  14. Open the exe.xml with Notepad++ and
    add to the end of the file, JUST BEFORE </SimBase.Document> these 6 lines:
    <Name>IvAp for P3D4</Name>
    <Path>F:\IvAp v2\ivap_dllhost.exe</Path> <CommandLine>ivap_fsx.dll</CommandLine>
  15. Adapt your path of your IvAp v2 installation as in
    <Path>F:\IvAp v2\ivap_dllhost.exe</Path>
  16. Do not change the CommandLine statement
  17.  Save the file and run the sim.
  18. You will find IvAp as normal in your Add-ons menu together with FSUIPC a.s.o.

User Issues

Transponder codes reset to 1200:
the transponder codes can only be set in standby position

Weather: strange effects?
Disable the weather engine in the IvAp Configuration panel, section Weather.

MTL: during the flights you will see the other aircraft as well as other pilots will see you, as long as both ends fly P3D4.
You will see only “lights” or ” black textures” from those aircraft that are not developed in a 64 bits version.

Another MTL? Read this post

20 thoughts on “IvAp Install in P3Dv4 (revised-6)

  1. Florian 2017-08-18 / 1:18 pm

    I got an external Laptop to run IVAP as a client in my Homecockpit. What i know is that this works in P3D V3 with a manual insert in the dll.xml. Like this:

    C:\Program Files (x86)\IVAO\IvAp v2\ivap_fsx_bootstrap.dll

    Does this works also with P3D V4? Or do I have to run Ivap now on my computer where Prepare 3d V4 is installed?


    • Jan 2017-09-24 / 10:57 pm

      @ Florian:: You find the answer above using the statements in the exe.xml file. You need the same WideFS to connect.


  2. Bruno 2017-09-10 / 11:53 pm

    I came from fsx to P3D V4 I wanna thank you for this excellent tutorial without you I couldn’t fly on IVAO thank you so mutch german friends 😀


    • lushka 2017-10-17 / 6:00 pm

      hi, thanks for your tutoriel
      i follow your advises, but ivap didnt detect fsx , and stop installation,
      can you help me please



      • Jan 2017-11-09 / 11:55 pm

        You need to point the installer to the installation folder of P3D4 where you created a copy of fsx.exe


    • Joop Schmidt 2017-11-09 / 11:24 pm

      Many thanks Jan for this hint on the Flightsim days in Aviodome Lelystad.
      Monday 6 nov started with P3D ver4 and make now 9 nov my first VFR flight – The IVAO tracker en KLM-VA working now 100% .
      Only the black FSX MTL is not a big problem for me.

      Flying Greetings Joop Schmidt VID 218372


  3. fatih bas 2017-10-12 / 10:48 pm


    I don’t understand those step ;

    Rename this copy to fsx.exe
    Install File #3:: Right mouse click the file ivap-v2.0.2-b2773.exe and install as normal as administrator in the root of your P3D4 installation disk
    Again: do not install inside … \P3D4\ …
    Again: do not install inside … \Program Files (x86)\ …

    do not install inside… \P3D4\ .. Where i must install it?


    • Jan 2017-11-09 / 11:57 pm

      Problem solved with Teamviewer session following the guidelines as in this post.


      • Diogo 2017-12-03 / 12:41 am

        yeah nice but can you reveal the answer pls? Having the same problem,


      • Jan 2017-12-03 / 10:46 am

        What is the question?


  4. Christopher 2017-11-05 / 9:55 am

    When i Install Ivap, in one step of the installing-process the installer ask me if i want to install fsuipc. I installed it before (like you mentioned it in step 1) but the installer says the current version is:”not installed”.
    Is it normal or do i have to do another step?


    • Jan 2017-11-09 / 11:54 pm

      The IvAp installer is looking for FSUIPC4; P3D4 has FSUIPC5; you can ignore the the installer.


  5. Adam Joyce 2017-11-16 / 1:59 pm

    Hi. I’ve followed these instructions closely but get an error on the client PC that the connection is refused because it cannot detect the flight location. FSUIPC is connected to my simulator PC via Wide FS. Can you offer any advice?


    • Jan 2017-11-22 / 6:29 pm

      P3D4 works with FSC9.6x; will not work with updated FSC9.7 see their website.
      Networksettings require user+pw on both pc/laptop
      https://flightsimeindhoven.com/2016/10/27/001/ see the 15 lines at the end of the post (can be translated with Google translator in the footer of this web).


  6. amzt 2017-11-21 / 4:24 pm

    i did all the instructions but ivap is not in addonsin p3d


    • Jan 2017-11-22 / 6:25 pm

      You must start the app with IvAp External as adminsitrator.


  7. Carlos M 2017-12-03 / 2:39 pm

    When IVAP its configured with Enable FSUIPC SDK always when start with the sim, have a window message “No FSUIPC will be available during this session of ivap”, how i can resolve this?

    Liked by 1 person

      • Carlos M 2017-12-03 / 10:35 pm

        Yes always, and ivap its ni folder out of Program files

        Liked by 1 person

      • Jan 2017-12-06 / 8:08 am

        sent you a PM for remote assistance

        Liked by 1 person

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