DCS Server Crash "#C0000005 ACCESS_VIOLATION at 00007ff76ee8bfdd 00:00000000"

[shaji]

We're having this crash on our Kola mission, there's no specific pattern, happens at different times, with a lot players, no players, less AI, more AI... Seems to be random. The functions seems to be encrypted in the DCS Server core in the log. Could you please help us with identifying the cause? Thank you.

 

2025-05-25 01:28:49.073 INFO    EDCORE (Main): try to write dump information
2025-05-25 01:28:49.290 INFO    EDCORE (Main): # -------------- 20250525-012849 --------------
2025-05-25 01:28:49.291 INFO    EDCORE (Main): DCS/2.9.16.10523 (x86_64; MT; Windows NT 10.0.26100)
2025-05-25 01:28:49.292 INFO    EDCORE (Main): C:\Program Files\Eagle Dynamics\DCS World Server\bin\DCS_server.exe
2025-05-25 01:28:49.294 INFO    EDCORE (Main): # C0000005 ACCESS_VIOLATION at 00007ff65799bfdd 00:00000000
2025-05-25 01:28:49.295 INFO    EDCORE (Main): SymInit: Symbol-SearchPath: 'C:\Program Files\Eagle Dynamics\DCS World Server\bin;', symOptions: 532, UserName: 'Heartbreaker Server'
2025-05-25 01:28:49.296 INFO    EDCORE (Main): OS-Version: 10.0.26100 () 0x100-0x1
2025-05-25 01:28:49.297 INFO    EDCORE (Main): 0x000000000075bfdd (DCS_server): SW + 0x14455D
2025-05-25 01:28:49.299 INFO    EDCORE (Main): 0x000000000078c04b (DCS_server): SW + 0x1745CB
2025-05-25 01:28:49.300 INFO    EDCORE (Main): 0x000000000071285f (DCS_server): SW + 0xFADDF
2025-05-25 01:28:49.300 INFO    EDCORE (Main): 0x000000000000461b (World): wSimTrace::CommandsTraceDiscreteIsOn + 0x3EB
2025-05-25 01:28:49.300 INFO    EDCORE (Main): 0x0000000000004c42 (World): wSimCalendar::DoActionsUntil + 0x262
2025-05-25 01:28:49.300 INFO    EDCORE (Main): 0x0000000000a4eeba (DCS_server): SW + 0x43743A
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x0000000000a4eb91 (DCS_server): SW + 0x437111
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x0000000000a74032 (DCS_server): SW + 0x45C5B2
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x0000000000a28d04 (DCS_server): SW + 0x411284
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x0000000000a2a3c3 (DCS_server): SW + 0x412943
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x00000000025abc5f (DCS_server): AmdPowerXpressRequestHighPerformance + 0x10C0C5B
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x00000000010ad99e (DCS_server): SW + 0xA95F1E
2025-05-25 01:28:49.301 INFO    EDCORE (Main): 0x000000000002e8d7 (KERNEL32): BaseThreadInitThunk + 0x17
2025-05-25 01:28:49.434 INFO    EDCORE (Main): Minidump created.

 

This is an old crash but it might related/similar: 

 

dcs.log-20250527-170053.zip dcs.log-20250526-110814.zip dcs.log-20250525-012849.zip

Edited May 27 by shaji

[shaji]

@BIGNEWY Here are a few more after the latest update.

dcs.log-20250608-092148.zip dcs.log-20250607-191728.zip dcs.log-20250607-181345.zip dcs.log-20250606-223048.zip dcs.log-20250606-221812.zip

Edited June 8 by shaji

[BIGNEWY]

thanks we will take a look for clues 

[BIGNEWY]

Edit

Custom Mods
Military Aircraft Mod

Please remove custom mods and run a slow repair of the server install. 

 

Windows Error Reporting (WER)

Your system crashes with Bluescreens.
The following kernel-events have been detected:
DRIVER_POWER_STATE_FAILURE,VIDEO_DXGKRNL_BLACK_SCREEN_LIVEDUMP,VIDEO_MINIPORT_BLACK_SCREEN_LIVEDUMP
Remove any overclocking (including XMP).,
Run SFC and DISM to check your Windows.,
Check for any updates of your BIOS or chipset drivers.

 

[shaji]

@BIGNEWY 

- We currently have 4 mods in the mission: HighDigitSAM, Military Aircraft Mod, 476RangeTargets and UH-60L. Does the issue specifically point to the Military Aircraft Mod?

- We're also running TacView with Real-Time Telemetry, but without data recording. 

- The WER are old, Bluescreen was from when we first setup the hardware due to an old BIOS version about a month ago, now the system is stable and has been up for 2 weeks now since the last restart. 

- We don't have XMP enabled nor any other overclocking.

- We ran SFC, DISM and DCS repairs multiple times now.

- Crash occurs under different circumstances which we're still unable to find a specific pattern. We were doubting that it might be a unit, but since we have hundreds of types it's hard to pinpoint. we thought you might be able to decode the crash error in the trace since it doesn't say which function in the server is causing it (0x000000000075bb2d (DCS_server): SW + 0x1440AD)

We used to see this crash on another setup as well but since it also had RAM issues that caused other types of crashes, we thought that was the issue. But this is the only crash that carried out from our old setup which we now know it's not hardware related. We closely monitor the CPU, FPS and Memory for each server instance, they all seem to be running stable, around 50% CPU, 62 FPS and 25-30 GB memory. 

 

Thank you.

Edited June 9 by shaji

[IndyNavy]

Would be great to understand why this is happening indeed. This is a high traffic Kola server. 

[Arbitrary]

Might be related to this one as well.