Microsoft.Xrm.RemotePlugin.Grpc.SandboxFabricGrpcClient error from Plugin in Dynamics 365 – Quick Review

Hi Folks,

I have been encountering a strange error since past few weeks now. If you search for this error in Internet you find nothing…the detailed error message obtained from the Plugin Trace Log is as below

System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault]: Exception occured ... at Microsoft.Xrm.RemotePlugin.Grpc.SandboxFabricGrpcClient.ExecutePluginInternal(IRemotePluginRequest pluginRequest, ExecuteRequest executeRequest, Guid executionId, ISandboxFabricDuplexCommunicationHandler communicationHandler, Boolean returnTraceInfo, Guid organizationId, SandboxFabricCallTracker sandboxFabricCallTracker) +0x5d0
at Microsoft.Xrm.RemotePlugin.Grpc.SandboxFabricGrpcClient.ExecutePlugin(IRemotePluginRequest pluginRequest, IPluginExecutionContext executionContext, IPluginTracingService pluginTracingService, ISandboxFabricDuplexCommunicationHandler communicationHandler, ISet`1 earlySerializedPropertiesList, SandboxFabricCallTracker sandboxFabricCallTracker, ISandboxMemoryStreamProvider memoryStreamProvider) +0x2cd
at Microsoft.Xrm.RemotePlugin.Grpc.SandboxFabricCodeUnit.Execute(ILifetimeScope scope, IExecutionContext context, SandboxFabricCallTracker& sandboxFabricCallTracker, ISandboxMemoryStreamProvider memoryStreamProvider) +0x6e
at Castle.Proxies.Invocations.ISandboxFabricCodeUnit_Execute.InvokeMethodOnTarget() +0x13
at Castle.DynamicProxy.AbstractInvocation.Proceed() +0x2d
at Microsoft.Xrm.RemotePlugin.Client.Interceptors.SandboxFabricPluginTraceInterceptor.Intercept(IInvocation invocation, IExecutionContext context, SandboxFabricCallTracker sandboxFabricCallTracker) +0x1f

The error message looked so strange to me and I couldn’t get any idea on what is happening, I thought some problem with the Plugin Code and it was executing more than 2 mins and hence causing error related to Sandbox service of Dynamics 365. I was executing this logic placed inside an action from Power Automate…this took couple of hours to figure out what was happening…

With no clue, I had started to change Plugin Code in the following ways…

1. Change the Synchronous Plugin to Asynchronous Plugin
   • It doesn’t show any error in Power Automate now, but in the Plugin Trace Log, it still throws the error
2. Add Try – Catch Block
   • Add try catch block made me understood that Plugin was causing an exception due to type casting issue in my logic. This worked…

FYI, I have removed some sensitive information from the below error message.

Microsoft recommends us to use Try – Catch block for efficient error handling, in the first place, so always use proper error handling while developing Plugins, Actions or Custom Workflows in Dynamics 365 to avoid such errors.

If you face this kind of error, this is some issue within your code and nothing to do with Microsoft Services, no need to raise a Microsoft Support Ticket for resolving this.

Hope this helps someone facing the same issue…

Cheers,

PMDY