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The DCS client and server quit with a "Login session has expired" popup when reconnecting to the master server after the connection had been lost for about half an hour.

Said quitting now appears to trigger a delayed segmentation fault. Originally reported here. Full crash dump: dcs.log-20251003-120952.zip

Annotated excerpt from dcs.log:

# tabbing in and out, everything works prior to computer suspension
2025-10-03 11:15:20.855 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [2560, 1440]
2025-10-03 11:15:22.549 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [0, 0]
2025-10-03 11:16:57.822 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [2560, 1440]
2025-10-03 11:17:02.051 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [0, 0]
2025-10-03 11:21:16.576 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [2560, 1440]
2025-10-03 11:21:17.875 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [0, 0]
...

# coming back up from suspension, the session check fails immediately
2025-10-03 12:06:56.534 ERROR   ASYNCNET (2808): HTTP request dcs:checksession failed with error 6: Could not resolve hostname
2025-10-03 12:06:56.535 WARNING ASYNCNET (2808): Session check failed: -6
...

# a minute later, DCS decides to terminate, but lets me tab in and out anyway
2025-10-03 12:07:57.966 ERROR   ASYNCNET (2808): The session has expired (401). Exiting...
2025-10-03 12:07:57.972 INFO    EDCORE (Main): (dDispatcher)enterToState_:5
2025-10-03 12:08:38.747 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [2560, 1440]
2025-10-03 12:08:42.582 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [0, 0]
2025-10-03 12:09:42.972 INFO    DXGUI_WIN_ADAPTER (Main): resize main window to [2560, 1440]
2025-10-03 12:09:48.735 INFO    APP (Main): application shutdown
...

# two minutes later, DCS suddenly SEGFAULTs
2025-10-03 12:09:49.196 WARNING SCENE (8972): Scene was removed with 1 alive objects
2025-10-03 12:09:49.210 INFO    WorldPlugIns (Main): Deinitializing plugins...
2025-10-03 12:09:50.441 INFO    TERRAIN (Main): lSystem::exit()
2025-10-03 12:09:50.443 INFO    TERRAIN (Main): lSystem::CleanScenes()
2025-10-03 12:09:50.443 INFO    WORLDGENERAL (Main): TerrainUtility:: updated in parallel: 0, updated in the main thread: 0
2025-10-03 12:09:50.504 INFO    INTER (8972): ITerrainGraphicsEntryPoint::close()
2025-10-03 12:09:50.564 INFO    INTER (Main): ITerrainEntryPoint::close()
2025-10-03 12:09:51.160 INFO    INTER (Main): ITerrainGraphicsEntryPoint::close()
2025-10-03 12:09:51.160 INFO    INTER (Main): ITerrainEntryPoint::close()
2025-10-03 12:09:51.161 INFO    EDCORE (Main): try to write dump information
2025-10-03 12:09:51.163 WARNING SCENE (8972): Scene was removed with 5 alive objects
2025-10-03 12:09:51.271 INFO    EDCORE (Main): # -------------- 20251003-120952 --------------
2025-10-03 12:09:51.273 INFO    EDCORE (Main): DCS/2.9.20.15384 (x86_64; MT; Windows NT 10.0.19045)
2025-10-03 12:09:51.275 INFO    EDCORE (Main): C:\Games\DCS World OpenBeta\bin\lua.dll
2025-10-03 12:09:51.277 INFO    EDCORE (Main): # C0000005 ACCESS_VIOLATION at 00007ff9994817d0 00:00000000
2025-10-03 12:09:51.279 INFO    EDCORE (Main): SymInit: Symbol-SearchPath: 'C:\Games\DCS World OpenBeta\bin;', symOptions: 532, UserName: 'user'
2025-10-03 12:09:51.281 INFO    EDCORE (Main): OS-Version: 10.0.19045 () 0x100-0x1
2025-10-03 12:09:51.282 INFO    EDCORE (Main): 0x00000000000017d0 (lua): lua_gettop + 0x0
2025-10-03 12:09:51.284 INFO    EDCORE (Main): 0x00000000000761eb (edCore): Lua::Config::Config + 0x1B
2025-10-03 12:09:51.286 INFO    EDCORE (Main): 0x0000000000a980de (DCS): SW + 0x47BEAE
2025-10-03 12:09:51.286 INFO    DX11BACKEND (8972): DX11Renderer::shutdown()
2025-10-03 12:09:51.288 INFO    EDCORE (Main): 0x0000000000a97c32 (DCS): SW + 0x47BA02
2025-10-03 12:09:51.290 INFO    EDCORE (Main): 0x0000000000a9078b (DCS): SW + 0x47455B
2025-10-03 12:09:51.290 INFO    EDCORE (Main): 0x0000000000a45aaf (DCS): SW + 0x42987F
2025-10-03 12:09:51.291 INFO    EDCORE (Main): 0x000000000015a56a (Visualizer): smSceneManager::DestroySceneManager + 0xCA
2025-10-03 12:09:51.291 INFO    EDCORE (Main): 0x0000000000a66f36 (DCS): SW + 0x44AD06
2025-10-03 12:09:51.291 INFO    EDCORE (Main): 0x00000000025b8da1 (DCS): AmdPowerXpressRequestHighPerformance + 0x1097D9D
2025-10-03 12:09:51.291 INFO    EDCORE (Main): 0x00000000010dac82 (DCS): SW + 0xABEA52
2025-10-03 12:09:51.291 INFO    EDCORE (Main): 0x0000000000017374 (KERNEL32): BaseThreadInitThunk + 0x14
2025-10-03 12:09:51.504 INFO    EDCORE (Main): Minidump created.
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