# AcquireLeaseResult.FailureException

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.leaseproviders.acquireleaseresult/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.leaseproviders.acquireleaseresult/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core/Providers/ILeaseProvider.cs#L84)

```csharp
[Orleans.Id(2)]
public Exception FailureException
```

If acquiring or renewing the lease failed, this is the exception which caused it. This field would be null if operation succeed.