CTD with CoherentUIGT.dll error

I am also getting the issue. I think it might be a bug with Microsoft Flight Simulator 2020 it’s self and if that’s the case it needs to be addressed.

Faulting application name: FlightSimulator.exe, version:, time stamp: 0x60783c14
Faulting module name: CoherentUIGT.dll, version:, time stamp: 0x5fc6aa59
Exception code: 0xc0000005
Fault offset: 0x000000000013f71c
Faulting process ID: 0x38e4
Faulting application start time: 0x01d73a731d83adb1
Faulting application path: C:\Program Files\WindowsApps\Microsoft.FlightSimulator_1.15.8.0_x64__8wekyb3d8bbwe\FlightSimulator.exe
Faulting module path: C:\Program Files\WindowsApps\Microsoft.FlightSimulator_1.15.8.0_x64__8wekyb3d8bbwe\CoherentUIGT.dll
Report ID: ffd9df48-60a5-4d80-aa25-91236499852a
Faulting package full name: Microsoft.FlightSimulator_1.15.8.0_x64__8wekyb3d8bbwe
Faulting package-relative application ID: App

Microsoft store or Steam?

Any commonality between your crashes? Location?

When does the crash take place? In flight?


I was getting this on a newbuild PC, since I updated the BIOS and other drivers to specific ones from the manufacturer rather than the ones automatically installed by Windows and been fine since then :crossed_fingers:

I also had that few days ago, I was flying FBW A32NX in Brazil. Yesterday I had a CTD and this time the culprit was RenoirCore.WindowsDesktop.dll. Both happened after couple of hours of flight.

Hello ,

It’s my first day on this forum.
I’ve had CTD on every flight in the past few days, I can fly for 20 minutes or more, but the error messages are always the same.

This file is always displayed in the Windows 10 64-bit Event Viewer.

Nothing I do helps with this CTD.

-no repaints in the community folder
-“Multiplayer” OFF "
-Rolling-Cache-Limit “OFF”
-Sound-Text option to speak “Windows Offline”
-Traffic “Real Time Aircraft”
-A32NX Mod stable and the experimental build version

I have deinstall my simulator and a new install , only addons from marketplace install.

I think the problems came with the last MSFS updates in end of March and now in April.
Or the World Update France causes problems.
Or it is Microsoft 10?

I found two files for Microsoft updates on the internet that have problems with games and Nvidia cards.

But I uninstalled these files and the CTD still occurs.

Do the CTD come from the A32NX Mod itself? and not from the simulator itself.
Are the NAV data, AIRAC different from the simulator and the A32NX Mod and that triggers the for CTD.
I have no navigraph or other , only dates from the simulator self.

Do other users here with other aircraft have the same CTD with CoherentUIGT.dll.

I think this is not our pc system , other games makes no problems.

Sorry for my bad english :grinning:
Best Regards

I have a question for the users with this CTD and the file for it.CoherentUIGT.dll
Do you have actively installed add-ons from the marketplace or third-party and these CTDs also happen there or even without add-ons.

Do the CTD only happen in Europe or in other areas?

I believe I may of just fixed the crashing to desktop for me at least with the error of ‘‘CoherentUIGT.dll’’ Even though 32GB DDR4 often does not need a page file, I just went on a hunch and created one and my crashing to desktop has stopped. I’m a bit baffled but I just successfully completed my FBW A320 flight from Los Angeles to Vancouver after 4 earlier attempts. If you have 32GB of ram, I suggest you create a page file, your crashing should stop. Make sure to do it for the drive that Microsoft Windows Is on and also the drive that Microsoft Flight Simulator 2020 is on if separate.

Hello Wayne,

I also have 32GB of RAM ( random access memory)
and wanted to ask how much you put in your paging file.

I didn’t install MSFS on C: but on my SSD F:.
Do I have to create a swap file for both drives and with what values?
Thanks for a help


normaly you should have enabled “system managed” on main drive “C:”

Only in some situation this doesnt work as expected ( e.g. low free disc space ).
Then you can increase this manual , and in case of 32 GIG I would recommend min:8 max 32GIG.

Hi, Yeah I can just give you the values I used. Yeah you need to apply them to both of your hard drives so for example the drive your Windows 10 is installed on and the drive that Microsoft Flight Simulator 2020 is installed on. Hopefully this will help you as well.

one note: it’s not necessay to set on both drives a pagefile. If you set two files, then windows handle all of these as one file.

e.g. latest I remember:

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Hey and thanks for your answers.

But I ask myself the question, why was I able to fly across Europe and the USA last month with repaints and the A32NX Mod and since the last few updates, the memory should be to blame.

I haven’t changed anything on my system, only Windows updates and updates from MSFS.

It’s good for Wayne, but I’ll wait for new updates first.

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I just want to give you my feedback, I made the same flight with almost the same conditions.
But this time with the default A320 and empty commuinty folder.
No crash in flight, when landing or at the gate.
I was even able to make the return flight after half an hour at the gate and this was also without a CTD.
At that time I was in the simulator for more than 2 hours (there and back and half an hour at the gate)

If you should read my entry, try to make your flight with the standard A320 on the route where you always had a CTD.
I would also try to make the flight without your changes with the paging file.


because may be the mod needs more memory :wink: and therefore the pagefile increasement recommendation. This is also a reason why issue reports within the forum are normaly only for “basic MSFS , without mods”.

Yep I will give that a shot.

After doing some more tweaking I guess you can say, I may of finally fixed the problem. However I cannot confirm it as of yet but here are the possible solutions to this problem.

  1. Disable the Xbox Game Bar (Culprit that is causing the stutters from time to time)
  2. Go into your bios and REMOVE the XMP profile for your RAM to have it at default settings. I can’t remember where I saw the POST originally but it was something about Microsoft Flight Simulator absolutely hating your RAM to be overclocked so I would recommend try to put your RAM back to default settings.
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within the big CTD thread ( and may be in FAQ )… we find out this long ago :slight_smile:

read now som posts about… I’am so lucky that I’am allways disable all in windows with starts with “Xbox*” :rofl: ( note: some users activeed background recording,… may be )…

Hello ,

I wanted to give you feedback again.
I reinstalled the latest A32NX mod (stable) and flew a different route.
What can I say, no crash from Brussels to Munich.
Tested again this evening, flight from Barcelona to Basel, 1 hour in Basel and the return flight, again no crash.
All flights but without custom liveries in the community folder.
I think it’s not the mod or airport add-on that always does this CTD, although that doesn’t happen with the standard A320.

For some reason, XMP is the culprit.
I have 32GB of ram 2133MHz base but on XMP is at 3600MHz

I have this flight that would CTD at different stages.

I tried to disable XMP - and I was able to complete my flight.

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Realizing this is a super old post, your comment about no liveries intrigued me.

Are you using 10K liveries?
Do they have isAirTraffic=1
Do they or the plane have UseGeneric=1

Did you set Use Generic Aircraft to true in the options.

There are many liveries out there, and many of them are poorly constructed. If your AI aircraft try to use a 10K livery, you’ll likely start getting CTD’s. If your AI aircraft try to use full models of the A320FBW, you’ll likely start getting CTD’s.

Make sure, if you’re going to use liveries, your isAirTraffic and UseGeneric flags are set to 0. And, personally, I’ve had issues with Use Generic Aircraft on, but, I have not yet cleaned out ALL my liveries. I imagine that’s the culprit. It’s going to take me a while to clean them all up and to create AI capable liveries for the airlines I want.