# PrimaryOperationFailed.Exception

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.eventsourcing/orleans.eventsourcing.common.primaryoperationfailed/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.eventsourcing/orleans.eventsourcing.common.primaryoperationfailed/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.EventSourcing/Common/ConnectionIssues.cs)

```csharp
[Orleans.Id(0)]
public Exception Exception
```

The exception that was caught when communicating with the primary.