Mobile Center crash reporting is not working

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Context

I am trying to test my Xamarin Forms app crash reporting on Android emulator. All Analytics function are working, however I can not see a single crash report in the server. I am using Crashes.GenerateTestCrash(); but I also produced real crashes too.

From the diagnostics it seems the device does not even sends the crash information to the server.

Question

What am I missing? or What else should I try?

Diagnostics and what I have tried so far

  • First of all, I've carefully read the Troubleshooting on page https://learn.microsoft.com/en-us/mobile-center/sdk/troubleshooting/xamarin paragraph 'Crashes don't show up in the portal'

  • I know that I must start the app again, to send the crash info

  • I have turned on verbose logging: MobileCenter.LogLevel = LogLevel.Verbose; It seems everything is initialized OK, including 'Set up Xamarin crash handler'
  • Examined the console verbose output, there are correct JSON analytic data transfers, however there are no traces any crash related
  • Manually debugged and checked the line Crashes.GenerateTestCrash(); is executing.
  • In OnStart I also checking the prev crash:

    // Returns false: bool didAppCrash = Crashes.HasCrashedInLastSessionAsync().Result; ErrorReport crashReport = Crashes.GetLastSessionCrashReportAsync().Result;

Console log parts

09-19 10:10:14.036 I/MobileCenterCrashes( 3173): Set up Xamarin crash handler.
09-19 10:10:14.064 F/MobileCenter( 3173): Mobile Center SDK configured successfully.
...
09-19 10:10:14.081 D/MobileCenter( 3173): checkPendingLogs(group_core) pendingLogCount=0
09-19 10:10:14.081 D/MobileCenter( 3173): Mobile Center storage initialized.
09-19 10:10:14.081 D/MobileCenter( 3173): checkPendingLogs(group_analytics) pendingLogCount=0
09-19 10:10:14.082 D/MobileCenterAnalytics( 3173): Loaded stored sessions: {...}
09-19 10:10:14.083 I/MobileCenter( 3173): Crashes service started.
09-19 10:10:23.815 V/MobileCenter( 3173): Calling https://in.mobile.azure.com/logs?api_version=1.0.0-preview20160914...
09-19 10:10:23.815 V/MobileCenter( 3173): Headers: {Install-ID=..., App-Secret=...}
09-19 10:10:23.817 V/MobileCenter( 3173): {
09-19 10:10:23.817 V/MobileCenter( 3173):   "logs": [
09-19 10:10:23.817 V/MobileCenter( 3173):     {
09-19 10:10:23.817 V/MobileCenter( 3173):       "type": "start_session",
09-19 10:10:23.817 V/MobileCenter( 3173):       "timestamp": "2017-09-
... and so on...
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