couatl64_MSFS2024.exe randomly crashing in the background

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PilotGW:
Hi,

I've recently moved over to MSFS 2024 and installed GSX a few days ago.

I've noticed that if I fly around, even without touching GSX, that couatl64_MSFS2024.exe will randomly crash in the background. Sometimes back to back. It's happened 6 times today alone. I should note, it seems happen exclusively in flight and with different aircraft.

--- Code: ---Description
Faulting Application Path: E:\Microsoft Flight Simulator Common\Addons\Utilities\Addon Manager\couatl64\couatl64_MSFS2024.exe

Problem signature
Problem Event Name: APPCRASH
Application Name: couatl64_MSFS2024.exe
Application Version: 5.0.0.6020
Application Timestamp: 68a72d4d
Fault Module Name: clr.dll
Fault Module Version: 4.8.9310.0
Fault Module Timestamp: 67db4f32
Exception Code: c0000005
Exception Offset: 000000000000657c
OS Version: 10.0.26100.2.0.0.256.48
Locale ID: 2057
Additional Information 1: 57d1
Additional Information 2: 57d1b217b3631ca7a6013087c8f7eca7
Additional Information 3: df18
Additional Information 4: df18a00a2396636b4c3ff128fb281f5c

Extra information about the problem
Bucket ID: 470a3265ef95919342302c2643910d50 (1310596034418773328)
--- End code ---

It always cites clr.dll as the faulting module. At the same time a .NET Runtime error is listed in Event Viewer

--- Code: ---Application: couatl64_MSFS2024.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an internal error in the .NET Runtime at IP 00007FFB52F3657C (00007FFB52F30000) with exit code 80131506.
--- End code ---

I've tried turning on logging within GSX, but the Couatl.log seems to start fresh every time Couatl reloads, so there are no clues there. It never leaves a panic log either (Couatl.ERR), so I'm flying blind.

I've tried:

* DISM and SFC. Some unrelated repairs made, but no change.
* Deactivating GSX, uninstalling it and FSDT Universal Installer and then reinstalling and reactivating everything.
The sim itself still runs and doesn't crash, but I've noticed stuttering coinciding with Couatl crashing and recovering.

I have:

9800X3D
64GB 6000MT/s RAM
RTX 5080
Windows 11 Pro

PilotGW:
I've had a little more time to do some further testing. My steps to reproduce the issue are:

* Fenix A320 / Default A321 NEO.
* Takeoff EGLL 09L. Turn north, climbing 6000ft.
Couatl crashes within a few minutes of me getting airborne, regardless of me opening GSX or not.

I tried each of the following individually, restarting the simulator and/or PC each step:

* I reset my BIOS, effectively disabling EXPO, ruling out memory overclock instability. Still crashes.

* I disabled my CPU's integrated graphics. Still crashes.

* I uninstalled Navigraph navdata. Still crashes.

* I removed everything from my Community folder except GSX. Still crashes.

* I removed all downloaded GSX airport profiles from Appdata. Still crashes.

* I unticked .NET 3.5 and 4.8 in Windows Features, restarted and reticked them to force an update. Still crashes.

* I disabled Windows Defender firewall. Still crashes.

* I made sure Addon Manager is added as an exclusion in Windows Defender. It is. Still crashes.

* I disabled Steam Overlay. Still crashes.

* I re-ran DISM scan and SFC. No corruption. Still crashes.

So I'm at a loss. Any help would be appreciated.

72westy:
I see this as well within Windows event viewer. My logs....

Log Name: Application
Source: Application Error
Date: 10/22/2025 11:20:20 PM
Event ID: 1000
Task Category: Application Crashing Events
Level: Error
Keywords:
User: DESKTOP-AFGL0LD\usnao
Computer: DESKTOP-AFGL0LD
Description:
Faulting application name: Couatl64_MSFS2024.exe, version: 5.0.0.6020, time stamp: 0x68a72d4d
Faulting module name: clr.dll, version: 4.8.9221.0, time stamp: 0x68531fc6
Exception code: 0xc0000005
Fault offset: 0x000000000000657c
Faulting process id: 0x501C
Faulting application start time: 0x1DC43E18059DBD6
Faulting application path: C:\Program Files (x86)\Addon Manager\couatl64\Couatl64_MSFS2024.exe
Faulting module path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Report Id: a973b5f6-6eda-406d-8b1a-5c7abcf037c8
Faulting package full name:
Faulting package-relative application ID:
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Error" Guid="{a0e9b465-b939-57d7-b27d-95d8e925ff57}" />
<EventID>1000</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>100</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2025-10-23T06:20:20.3724895Z" />
<EventRecordID>76159</EventRecordID>
<Correlation />
<Execution ProcessID="10416" ThreadID="24680" />
<Channel>Application</Channel>
<Computer>DESKTOP-AFGL0LD</Computer>
<Security UserID="S-1-5-21-2400603791-3703659137-366786281-1002" />
</System>
<EventData>
<Data Name="AppName">Couatl64_MSFS2024.exe</Data>
<Data Name="AppVersion">5.0.0.6020</Data>
<Data Name="AppTimeStamp">68a72d4d</Data>
<Data Name="ModuleName">clr.dll</Data>
<Data Name="ModuleVersion">4.8.9221.0</Data>
<Data Name="ModuleTimeStamp">68531fc6</Data>
<Data Name="ExceptionCode">c0000005</Data>
<Data Name="FaultingOffset">000000000000657c</Data>
<Data Name="ProcessId">0x501c</Data>
<Data Name="ProcessCreationTime">0x1dc43e18059dbd6</Data>
<Data Name="AppPath">C:\Program Files (x86)\Addon Manager\couatl64\Couatl64_MSFS2024.exe</Data>
<Data Name="ModulePath">C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll</Data>
<Data Name="IntegratorReportId">a973b5f6-6eda-406d-8b1a-5c7abcf037c8</Data>
<Data Name="PackageFullName">
</Data>
<Data Name="PackageRelativeAppId">
</Data>
</EventData>
</Event>

72westy:
2nd one...

Log Name: Application
Source: .NET Runtime
Date: 10/22/2025 11:20:20 PM
Event ID: 1023
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: DESKTOP-AFGL0LD
Description:
Application: Couatl64_MSFS2024.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an internal error in the .NET Runtime at IP 00007FF94169657C (00007FF941690000) with exit code 80131506.

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name=".NET Runtime" />
<EventID Qualifiers="0">1023</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2025-10-23T06:20:20.0697911Z" />
<EventRecordID>76158</EventRecordID>
<Correlation />
<Execution ProcessID="20508" ThreadID="0" />
<Channel>Application</Channel>
<Computer>DESKTOP-AFGL0LD</Computer>
<Security />
</System>
<EventData>
<Data>Application: Couatl64_MSFS2024.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an internal error in the .NET Runtime at IP 00007FF94169657C (00007FF941690000) with exit code 80131506.
</Data>
</EventData>
</Event>

72westy:
I also ran the following commands (w/admin rights) and when all completed successfully and without error/s. In the following order:

Dism.exe /online /Cleanup-Image /checkhealth

Dism.exe /online /Cleanup-Image /scanhealth

Dism.exe /online /Cleanup-Image /Restorehealth

sfc /scannow

Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore

Dism.exe /Online /Cleanup-Image /StartComponentCleanup

RESTARTED computer as the last step.

My thought is the sim 2024 is crashing it. I'll report this on the MSFS 2020/2024 official forum as well so they are aware. Reported here: https://forums.flightsimulator.com/t/couatl64-msfs2024-exe-issue/743940

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