Long running UWP application closes randomly with Exception code

[ElaJegen]

This is an UWP app that communicates to PLC controllers. It send commands, receive real-time data every second, display data with graphs and textfields.

Application was running for 19+ hours before a crash happened. With Event Log, we were able to collect Exception codes: Error codes: 1: c0000005 (Windows.UI.Xaml.dll) 2: c0000374 (ntdll.dll)

We were not able to reproduce this exceptions on our debug environment. Don't have a steps to reproduce. Really appreciate any help!

Event Log for c0000005 error: Application Error: Faulting application name: [App Name], version: 1.0.0.0, time stamp: 0x5e5883fd Faulting module name: Windows.UI.Xaml.dll, version: 10.0.19041.3693, time stamp: 0x4d0a8551 Exception code: 0xc0000005 Fault offset: 0x000000000014eb49 Faulting process id: 0x259c Faulting application start time: 0x01da196718830019 Faulting application path: C:\Program Files\WindowsApps[App Name] Faulting module path: C:\Windows\System32\Windows.UI.Xaml.dll Report Id: 47086d13-72cf-43b7-b2e0-4c730e9cc6ed Faulting package full name: [App Name] Faulting package-relative application ID: App

Event Log for c0000374 Application Error: Faulting application name: [App Name], version: 1.0.0.0, time stamp: 0x5e5883fd Faulting module name: ntdll.dll, version: 10.0.19041.3636, time stamp: 0x9b64aa6f Exception code: 0xc0000374 Fault offset: 0x00000000000ff349 Faulting process id: 0x2dcc Faulting application start time: 0x01da20c57b485de4 Faulting application path: C:\Program Files\WindowsApps[App Name] Faulting module path: C:\Windows\SYSTEM32\ntdll.dll Report Id: e5a51a12-41fc-4f84-a96e-f84965d38824 Faulting package full name:[App Name] Faulting package-relative application ID: App

Windows Error Reporting: [App Name] 1.0.0.0 5e5883fd ntdll.dll 10.0.19041.3636 9b64aa6f c0000374 00000000000ff349 2dcc 01da20c57b485de4 C:\Program Files\WindowsApps[App Name] C:\Windows\SYSTEM32\ntdll.dll e5a51a12-41fc-4f84-a96e-f84965d38824 [App Name] App

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Closed similar issues:

• Long running UWP App crashes | Exception c0000374 (#9128), similarity score: 0.92
• Long running UWP App Crash | Exception 0xc0000005 in Windows.UI.Xaml.dll (#2106), similarity score: 0.89

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[IstvanKor]

Just an idea: It might be some issue related to app suspension. Try postponing your app suspension with extended execution. https://learn.microsoft.com/en-us/windows/uwp/launch-resume/run-minimized-with-extended-execution

var newSession = new ExtendedExecutionSession(); newSession.Reason = ExtendedExecutionReason.Unspecified; newSession.Description = "Description"; ExtendedExecutionResult result = await newSession.RequestExtensionAsync();

// Controller process

newSession.Dispose(); newSession = null;