When running an import to PST with a Native Format Import module you may encounter the error MAPI_E_LOGON_FAILED.

2020-05-15 07:20:38Z| 7840|server_name| 5|ERROR| OnStart|Service not started correctly. Void Logon(System.Object, System.Object, System.Object, System.Object, System.Object, System.Object)
at Redemption.IRDOSession.Logon(Object ProfileName, Object Password, Object ShowDialog, Object NewSession, Object ParentWindowHandle, Object NoMail)
at ArchiveShuttle.Module.NativeFormatImportModule.CommandExecution.InitializeRDOSession()
at ArchiveShuttle.Module.NativeFormatImportModule.Program.<>c__DisplayClass1_0.<Main>b__0(String[] argument)
at ArchiveShuttle.Modules.Common.ServiceImpl.OnStart(String[] args)
2020-05-15 07:20:38Z| 7840|server_name| 5| INFO| DeferredStop|Service stopped.

Possible cause 
This issue can occur because Windows Server 2008 and later versions allow a default maximum of only 50 concurrent NSPI connections per user. Additional NSPI connections are rejected, and a MAPI_E_LOGON_FAILED error message is returned.
Please refer to Mircosoft KB
You can implement the feature to enable service re-creation of MAPI profile to minimize the impact of the limitation detailed above.

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