...after preparing the system and installing fresh as I recommended...

  and the problem persists - I would next go to the folder:

"C:\Users\you\AppData\Local\Lockheed Martin\Prepar3D v5"

to make an edit to the default flight file. Before I start I might copy the default flight file "Prepar3D_Default.fxml" (although deleting this will cause P3D to rewrite it) and in that file I would search for "<Section Name="Sim.0">" and edit that value from:

<Property Name="Sim" Value="Lockheed Martin F-35A Lightning II" />

to

<Property Name="Sim" Value="" />

then when I start P3D from the desktop shortcut it will complain that the model is missing and will go into the scenario screen with a blank vehicle box. If that works OK I would contact Lockheed Martin about the problem. This would be an issue with the Windows installation.

 

steve  would  this  option    work  for  the  op

 

17 minutes ago, SteveW said:

yes that would work too, however I would want to be sure that the install really is fresh and renaming those folders is easy and keeps any of my files for later. If you install into D:\ then you own that folder and automatically have modify rights to it so no need to run as admin, unless your addon accesses a network share that was set up for admins.

Agreed your suggestion would ensure a clean run. And I agree that the second run loads the addons when the first run doesn’t. An important clue.

I do run other programs via WideFS on another computer but no references for P3D to network paths. I just followed Pete Dowson’s advice for a short path.

29 minutes ago, pete_auau said:

steve  would  this  option    work  for  the  op...

Maybe if the problem is with Windows.

 

27 minutes ago, Ray Proudfoot said:

Agreed your suggestion would ensure a clean run. And I agree that the second run loads the addons when the first run doesn’t. An important clue.

I do run other programs via WideFS on another computer but no references for P3D to network paths. I just followed Pete Dowson’s advice for a short path.

The only reason I spoke about how I install to the default P3D folder "C:\Program Files\Lockheed Martin\Prepar3D v5" for the list of folders for renaming was so that if you installed into "D:\P3Dv5" then I am suggesting to rename your folder to "D:\P3Dv5 Old" (example) before installing the fresh P3D.

Can P3d be started in Safe Mode?

dll.xml?

1 minute ago, Adrian123 said:

dll.xml?

Yes, that is a good idea to be a quick check to rename that and also exe.xml and start up P3D. Also I mentioned to try renaming the default flight vehicle to empty, that would also be a quick check before reinstalling etc.

On 1/13/2022 at 6:35 AM, mobiel said:

The scenario startup screen never comes.

How long have you waited for it?

I´am asking this, because i´ve had it myself, after i installed additional scenery or changed settings, or injected new shader setting with ENSHADE, that it took about 3 to 4 minutes where only the P3D startup wallpaper was on my screen and it seemed it stoped loading. But after 4 minutes the popup window came up where it tells you that the scenery index is rebuilding and from then on just 30 seconds later the scenario screen came up.

Thanks guys, I will look into it tomorrow again!

But I can say I waited loong enough nearly 10 minutes.

Edited January 14, 20224 yr by mobiel

@mobiel, when you install again it’s very important (as Steve says) that you choose a different location to the previous install. That ensures no files from the original will be picked up.

if  all  fails  this  time  more  likely  a window issue  which most likely  a  clean install of  windows   if my link  above  does  not  work  for  you

Good morning,

@Ray Proudfoot first my Windows Build: Version 21H2 ( Build 19044.1466)

so I reinstalled P3D complete to a new folder:

- the first run as always okay and fine. I loaded the default flight and close P3D again to start the second run

- the second run the same issue again !

Then I tried to edit the default flight as @SteveW mentioned.:

- same issue !

I deleted dll.xml

- same issue !

I deleted exe.xml

- same issue !

After that I uninstalled the Windows Updates which may crashes P3D, reboot the PC and delete generated files:

- the first run okay - loading default flight okay

- the second run again the same issue

I cannot imagine that it is a windows problem because the first run is quite fine

Edited January 15, 20224 yr by mobiel

@mobiel,

I'm on the same Windows build version so we can probably discount that being the problem.

As Steve said yesterday the second run reads add-on.cfg files. There are two. Please paste their contents using the Spoiler feature on the toolbar to hide the contents. One under Program Data - the other under your user profile.

It might be worth running sfc /scannow.

https://support.microsoft.com/en-us/topic/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system-files-79aa86cb-ca52-166a-92a3-966e85d4094e

10 minutes ago, Ray Proudfoot said:

It might be worth running sfc /scannow.

https://support.microsoft.com/en-us/topic/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system-files-79aa86cb-ca52-166a-92a3-966e85d4094e

No issues were found

Actually a do a third clean install and then I will post both add-on.cfg