CTD on every play

[brags8124]

Hi everyone,

I’m experiencing constant crashes in MSFS 2024 and I’m hoping someone can help. The sim crashes every flight, without exception, and the error always points to the “grammar.pggmod” module.

Here’s what I’ve tried so far:

• Disabled Realtek audio: Saw this suggested as a potential fix, but no luck.
• Fresh install of MSFS 2024: Completely uninstalled and reinstalled the sim.
• Empty Community folder: Removed all mods and add-ons.
• Checked for Windows Updates: Made sure my system is fully up-to-date.

The crashes happen in all modes, including free flight and career mode. Interestingly, MSFS 2020 runs perfectly fine on my system, even on long flights.

Here are my system specs:

• OS: Windows 11 (English)
• CPU: i9 14900K
• GPU: RTX 4080 Super
• RAM: 32GB DDR5 6200 Mhz

Could this be a compatibility issue with my hardware or Windows 11? Has anyone else encountered this “grammar.pggmod” error? Any help would be greatly appreciated!

Additional Information to Consider Including:

• MSFS 2024 Version: Standard from Gamepass
• Drivers: Nvidia Game ready 566.14
• Overclocking: No.
• Crash Log:

Faulting application name: FlightSimulator2024.exe, version: 1.1.10.0, time stamp: 0x00000000
Faulting module name: grammar.pggmod, version: 76.0.0.3, time stamp: 0x63ee0f54
Exception code: 0xc0000005
Fault offset: 0x000000000502d30c
Faulting process id: 0x0x7C70
Faulting application start time: 0x0x1DB452E55C98DAA
Faulting application path: C:\Program Files\WindowsApps\Microsoft.Limitless_1.1.10.0_x64__8wekyb3d8bbwe\FlightSimulator2024.exe
Faulting module path: \\?\C:\PROGRAM FILES\WINDOWSAPPS\MICROSOFT.LIMITLESS_1.1.10.0_X64__8WEKYB3D8BBWE\Packages\bf-pgg\PGG\grammar.pggmod
Report Id: 41817072-bf7e-4e8e-944d-0c1193561bca
Faulting package full name: Microsoft.Limitless_1.1.10.0_x64__8wekyb3d8bbwe
Faulting package-relative application ID: App

[OldpondGL]

That might be an old bug related to the location you are flying from. Try another location.

100% reproducible CTD at specific coordinates for months [grammar.pggmod]

For months (since the launch of MSFS) I am getting the same CTD at the same coordinates 100% reproducible every try. I created a ticket and many follow up tickets, but they are just closed with copy-paste default answers and suggestions, which are not helpful (I did a complete fresh installation multiple times), I don’t think anyone has even read the details I provided. Trying to reproduce the CTD would just take a few minutes, even if it’s not reproducible on their side I’d at least know it’s …

[brags8124]

I tried. It happens in KSFO, SBBH (career mode), and others airports as well

[OldpondGL]

I am wondering if this might be localization issues. Is your system standard US keyboard English, etc.? @Zeanuck Looping you in since you have similar issues.

[brags8124]

No. My keyboard is set to English - International. And system locale is set to Brazil - dates and time appear in DD/MM/YYYY and HH:MM

[Zeanuck]

I’m in Canada and using US keyboard settings.

Also where does one find the crash log? My CTDs just shut the sim down or more often than not freeze the whole system requiring a hard reboot.

When did flight simmers become debuggers?

[OldpondGL]

Right click Start, Event Viewer, Administration Events, look for the one just before you boot after the crash.

[KnowSoupForYou]

I have fixed my crashes by doing two things (not sure which one fixed the issue):

1. I was wondering if I might be getting processor core over voltage. I disabled processor core affinity for cores 16-31.

Steps to do this: (I have Windows 11)

1. Open Windows Task Manager

2. Select details section from the options on the left hand side.

3. Right click the FlightSimulator2024.exe process

4. Select Set Affinity

5. Uncheck CPU 16 through CPU 31

6. Changed the games rolling cache limit to 64GB.

Steps to do this:

1. Go to game settings
2. Select Online
3. Scroll down to Rolling Cache Limit (GiB) and change the value to 64.0

I have done about 10 missions since I did this with no crashes.

Hope this helps someone else.

[SylvesterRocket]

I have seen recommendations like this now many times. I might give it a try.

It is only sad that you have to limit the resources of your expensive System just to play a new developed game.

I have seen people changing their 4090 card to a 2070ti, ripping out 32gb RAM, reducing cores like you did, use VPN just to get a stable connection (game should not crash if it does not receive data in time - just my opinion), downgrading driver despite MS is recommending the exact opposit, and many other “solutions” like this.
In my mind this is just poor coding.

Anyhow thank you for your suggestion, worth another try.

Edit: I did start up my system and noticed there is a new NVIDIA driver available. After a DDU and fresh installation the sim did start and I was able to start a flight. - FYI