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Simconnect suddenly stops working

Featured Replies

Hi all,

I am facing a very frustrating issue, where after some time in flight simconnect is losing control. As a result the airfraft starts drifting from path and eventually crashes, as I cannot have any control by joystick inputs but also the autopilot cannot control the plane. It has happened to both FS Labs and PMDG aircraft using either Ezdok or Chaseplane, which they also lose control. I tried to delete weatherlist.dll as seen in P3D forums but no luck, it happens again. I also tried to uninstall and reinstall all versions of simconnect, still same thing happens. 

I'm in the verge to reinstall completely P3D, but as this is always a hassle, does anyone have any idea how to fix this? I'd appreciate any help.

Thank you for your time. 

Edited by ComSimPilot

Simulators: Prepar3D v5.4  | X-Plane 12 | DCS  World  MSFS 2024 | 
PC Hardware: Dell U3417W AMD Ryzen 7 9800 X3D | ASUS TUF 5070 Ti ASUS TUF B580 Plus Wifi | G.Skill Z5 Neo 64GB 3000Mhz CL30 | Samsung 990 Pro 2TB + 970 EVO Plus 1TB + 860 EVO 2TB + 850 EVO 1TB, Western Digital Black Caviar Black 6TB Corsair RM1000i Corsair 280 Titan RX | VRM Fan | Fractal Design Define S2 Gunmetal |
Flight Controls: Fulcrum One Yoke Virpil VPC WarBRD Base Virpil VPC MongoosT-50CM Grip, Thrustmaster Warthog+F/A-18C Grip VIER IM POTT Sidestick CPT Side | Thrustmaster TPR Rudder Pedals | Virtual Fly TQ6+Throttle Quadrant | Sismo B737 Max Gear Lever Monsterteck Desk Mounts WINWING EfisL+FCU+MCDU |
My fleet catalog: Link                                                                                                                                                       

  • Moderator

If your hardware is connected via USB make sure power management is disabled for all USB devices. It sounds like your devices are going into sleep mode after a period of no physical movement.

Your experience is very odd so has to be a local issue rather than something inherent in P3D.

Ray (Cheshire, England).

System: P3D v5.3HF2, Intel i9-13900K, MSI 4090 GAMING X TRIO 24G, Crucial T700 4Tb M.2 SSD, Asus ROG Maximus Z790 Hero, 32Gb Corsair Vengeance DDR5 6000Mhz RAM, Win 11 Pro 64-bit, BenQ PD3200U 32” UHD monitor, Fulcrum One yoke, Fulcrum Throttle Quadrant.

Cheadle Hulme Weather website.

chlive.php

  • Author

Hello Ray,

Thank you for your reply. I'll make sure to give this a try, however I think its something with simconnect. I've found others reporting the same but haven't found a definite solution yet

simconnect not working in europe - Prepar3D Forums

sim stops responding after 7 hours - FSUIPC Support Pete Dowson Modules - The simFlight Network Forums

[P3Dv5] Freeze during cruise, flight controls not responsive - Crash to Desktop & General Sim Issues - Flight Sim Labs Forums

 

Edited by ComSimPilot

Simulators: Prepar3D v5.4  | X-Plane 12 | DCS  World  MSFS 2024 | 
PC Hardware: Dell U3417W AMD Ryzen 7 9800 X3D | ASUS TUF 5070 Ti ASUS TUF B580 Plus Wifi | G.Skill Z5 Neo 64GB 3000Mhz CL30 | Samsung 990 Pro 2TB + 970 EVO Plus 1TB + 860 EVO 2TB + 850 EVO 1TB, Western Digital Black Caviar Black 6TB Corsair RM1000i Corsair 280 Titan RX | VRM Fan | Fractal Design Define S2 Gunmetal |
Flight Controls: Fulcrum One Yoke Virpil VPC WarBRD Base Virpil VPC MongoosT-50CM Grip, Thrustmaster Warthog+F/A-18C Grip VIER IM POTT Sidestick CPT Side | Thrustmaster TPR Rudder Pedals | Virtual Fly TQ6+Throttle Quadrant | Sismo B737 Max Gear Lever Monsterteck Desk Mounts WINWING EfisL+FCU+MCDU |
My fleet catalog: Link                                                                                                                                                       

  • Moderator

@ComSimPilot, I didn’t read all the links but given it’s v5 which I don’t have I can’t really help. Seven hours is a long time before a problem strikes. It must be very difficult to work out why.

As mentioned in one discussion the usual option is to fly a default aircraft to see if the problem can be replicated. That might be the best option unattractive though it is. An uninstall and reinstall may fix the problem but you’ll never know what caused it.

Good luck!

Ray (Cheshire, England).

System: P3D v5.3HF2, Intel i9-13900K, MSI 4090 GAMING X TRIO 24G, Crucial T700 4Tb M.2 SSD, Asus ROG Maximus Z790 Hero, 32Gb Corsair Vengeance DDR5 6000Mhz RAM, Win 11 Pro 64-bit, BenQ PD3200U 32” UHD monitor, Fulcrum One yoke, Fulcrum Throttle Quadrant.

Cheadle Hulme Weather website.

chlive.php

  • Commercial Member

To confirm it is a simconnect issue, you can activate simconnect logging by using a simconnect.ini file - see https://forum.simflight.com/topic/45074-help-logging-simconnect/.


There is also a known issue with simconnect in that it fails when the maximum number of clients have been exceeded. If you have a simconnect.log file generated, you can count the number of connections used up to the point when it fails, and see if this number matches the number of simconnect connections used. You can increase that number using the maxClients  attribute - see https://www.prepar3d.com/SDKv4/sdk/simconnect_api/configuration_files/configuration_files_overview.html.

 

  • Author

Thank you very much John for your reply and help ! I will definitely try this. It's a very frustrating issue. 

Edited by ComSimPilot

Simulators: Prepar3D v5.4  | X-Plane 12 | DCS  World  MSFS 2024 | 
PC Hardware: Dell U3417W AMD Ryzen 7 9800 X3D | ASUS TUF 5070 Ti ASUS TUF B580 Plus Wifi | G.Skill Z5 Neo 64GB 3000Mhz CL30 | Samsung 990 Pro 2TB + 970 EVO Plus 1TB + 860 EVO 2TB + 850 EVO 1TB, Western Digital Black Caviar Black 6TB Corsair RM1000i Corsair 280 Titan RX | VRM Fan | Fractal Design Define S2 Gunmetal |
Flight Controls: Fulcrum One Yoke Virpil VPC WarBRD Base Virpil VPC MongoosT-50CM Grip, Thrustmaster Warthog+F/A-18C Grip VIER IM POTT Sidestick CPT Side | Thrustmaster TPR Rudder Pedals | Virtual Fly TQ6+Throttle Quadrant | Sismo B737 Max Gear Lever Monsterteck Desk Mounts WINWING EfisL+FCU+MCDU |
My fleet catalog: Link                                                                                                                                                       

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