We recently configure IFD on our CRM server, When we trying to connect crm server via mobile app it shows
Version details
CRM 365 Version 1612 (8.2.2.112) (DB 8.2.2.112) on-premises
Android Version 6.0.1
Windows Server 2012 R2
Error Logs
CRM Server Event Log
The Web Service plug-in failed in OrganizationId: b2c7e865-d326-e311-93f2-00155d458e03; SdkMessageProcessingStepId: 06cabb1b-ea3e-db11-86a7-000a3a5473e8; EntityName: annotation; Stage: 30; MessageName: Create; AssemblyName: Microsoft.Crm.Extensibility.InternalOperationPlugin, Microsoft.Crm.ObjectModel, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35; ClassName: Microsoft.Crm.Extensibility.InternalOperationPlugin; Exception: Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Web.Services.Protocols.LogicalMethodInfo.Invoke(Object target, Object[] values)
at Microsoft.Crm.Extensibility.InternalOperationPlugin.Execute(IServiceProvider serviceProvider)
at Microsoft.Crm.Extensibility.V5PluginProxyStep.ExecuteInternal(PipelineExecutionContext context)
at Microsoft.Crm.Extensibility.VersionedPluginProxyStepBase.Execute(PipelineExecutionContext context)
Inner Exception: System.InvalidCastException: Unable to cast object of type 'System.DBNull' to type 'System.String'.
at Microsoft.Crm.ObjectModel.AttachmentServiceBase.AdjustAttachmentMimeType(BusinessEntity attachment)
at Microsoft.Crm.ObjectModel.AttachmentServiceBase.Create(IBusinessEntity entity, ExecutionContext context)
at Microsoft.Crm.ObjectModel.AnnotationServiceInternal`1.Create(IBusinessEntity entity, ExecutionContext context)
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