Unhandled Exception: System.ServiceModel. FaultException while registering Plugin in Dynamics 365 Online

Sanjaya Pradhan Dynamics 365 CRM February 23, 2021 | 0

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Sometimes you will get issues while registering plugins for Dynamics 365 online like below. The solution is given below scroll.

EXCEPTION WHILE REGISTERING PLUGIN

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: An unexpected error occurred.
Detail: <OrganizationServiceFault xmlns="http://schemas.microsoft.com/xrm/2011/Contracts" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <ActivityId>5656f199-bd5c-4c59-9d7e-f544b2ef9b1c</ActivityId>
  <ErrorCode>-2147220970</ErrorCode>
  <ErrorDetails xmlns:a="http://schemas.datacontract.org/2004/07/System.Collections.Generic">
    <KeyValuePairOfstringanyType>
      <a:key>ApiExceptionSourceKey</a:key>
      <a:value i:type="b:string" xmlns:b="http://www.w3.org/2001/XMLSchema">Plugin/Microsoft.Crm.ObjectModel.PluginAssemblyService</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiOriginalExceptionKey</a:key>
      <a:value i:type="b:string" xmlns:b="http://www.w3.org/2001/XMLSchema">Microsoft.Crm.CrmException: An unexpected error occurred. ---&gt; System.FormatException: Input string was not in a correct format.
   at System.Text.StringBuilder.FormatError()
   at System.Text.StringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ParamsArray args)
   at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args)
   at System.String.Format(IFormatProvider provider, String format, Object arg0, Object arg1)
   at Microsoft.Crm.ObjectModel.TargetFrameworkVersionValidator.ValidateInternal()
   at Microsoft.Crm.ObjectModel.PluginValidatorBase.Validate()
   at Microsoft.Crm.ObjectModel.PluginAssemblyServiceInternal`1.ValidateAssemblyMetadata(ExecutionContext context, IBusinessEntity pluginAssembly, CrmPluginAssemblyMetadata assemblyMetadata)
   at Microsoft.Crm.ObjectModel.PluginAssemblyServiceInternal`1.VerifyRegistrationAbility(IBusinessEntity pluginAssembly, Boolean createCall, ExecutionContext context, CrmPluginAssemblyMetadata assemblyMetadata)
   at Microsoft.Crm.ObjectModel.PluginAssemblyServiceInternal`1.ValidateOperation(String operationName, IBusinessEntity entity, ExecutionContext context)
   at Microsoft.Crm.ObjectModel.SdkEntityServiceBase.CreateInternal(IBusinessEntity entity, ExecutionContext context, Boolean verifyAction)
   --- End of inner exception stack trace ---
   at Microsoft.Crm.Extensibility.VersionedPluginProxyStepBase.Execute(PipelineExecutionContext context)
   at Microsoft.Crm.Extensibility.PipelineInstrumentationHelper.Execute(Boolean instrumentationEnabled, String stopwatchName, ExecuteWithInstrumentation action, PipelineExecutionContext context)
   at Microsoft.Crm.Extensibility.Pipeline.&lt;&gt;c__DisplayClass6_0.&lt;RunStep&gt;b__0()</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiStepKey</a:key>
      <a:value i:type="b:guid" xmlns:b="http://schemas.microsoft.com/2003/10/Serialization/">3ecabb1b-ea3e-db11-86a7-000a3a5473e8</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiDepthKey</a:key>
      <a:value i:type="b:int" xmlns:b="http://www.w3.org/2001/XMLSchema">1</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiActivityIdKey</a:key>
      <a:value i:type="b:guid" xmlns:b="http://schemas.microsoft.com/2003/10/Serialization/">5656f199-bd5c-4c59-9d7e-f544b2ef9b1c</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiPluginSolutionNameKey</a:key>
      <a:value i:type="b:string" xmlns:b="http://www.w3.org/2001/XMLSchema">System</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiStepSolutionNameKey</a:key>
      <a:value i:type="b:string" xmlns:b="http://www.w3.org/2001/XMLSchema">System</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiExceptionCategory</a:key>
      <a:value i:type="b:string" xmlns:b="http://www.w3.org/2001/XMLSchema">SystemFailure</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiExceptionMesageName</a:key>
      <a:value i:type="b:string" xmlns:b="http://www.w3.org/2001/XMLSchema">UnExpected</a:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <a:key>ApiExceptionHttpStatusCode</a:key>
      <a:value i:type="b:int" xmlns:b="http://www.w3.org/2001/XMLSchema">400</a:value>
    </KeyValuePairOfstringanyType>
  </ErrorDetails>
  <HelpLink>http://go.microsoft.com/fwlink/?LinkID=398563&amp;error=Microsoft.Crm.CrmException%3a80040216&amp;client=platform</HelpLink>
  <Message>An unexpected error occurred.</Message>
  <Timestamp>2021-02-23T09:23:29.330478Z</Timestamp>
  <ExceptionRetriable>false</ExceptionRetriable>
  <ExceptionSource i:nil="true" />
  <InnerFault>
    <ActivityId>5656f199-bd5c-4c59-9d7e-f544b2ef9b1c</ActivityId>
    <ErrorCode>-2147220970</ErrorCode>
    <ErrorDetails xmlns:a="http://schemas.datacontract.org/2004/07/System.Collections.Generic" />
    <HelpLink i:nil="true" />
    <Message>System.FormatException: Input string was not in a correct format.
   at System.Text.StringBuilder.FormatError() +0xf
   at System.Text.StringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ParamsArray args) +0x0
   at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args) +0xe
   at System.String.Format(IFormatProvider provider, String format, Object arg0, Object arg1) +0x0
   at Microsoft.Crm.ObjectModel.TargetFrameworkVersionValidator.ValidateInternal() +0x4f
   at Microsoft.Crm.ObjectModel.PluginValidatorBase.Validate() +0x7b
   at Microsoft.Crm.ObjectModel.PluginAssemblyServiceInternal`1.ValidateAssemblyMetadata(ExecutionContext context, IBusinessEntity pluginAssembly, CrmPluginAssemblyMetadata assemblyMetadata) +0x30
   at Microsoft.Crm.ObjectModel.PluginAssemblyServiceInternal`1.VerifyRegistrationAbility(IBusinessEntity pluginAssembly, Boolean createCall, ExecutionContext context, CrmPluginAssemblyMetadata assemblyMetadata) +0x6b
   at Microsoft.Crm.ObjectModel.PluginAssemblyServiceInternal`1.ValidateOperation(String operationName, IBusinessEntity entity, ExecutionContext context) +0xa7
   at Microsoft.Crm.ObjectModel.SdkEntityServiceBase.CreateInternal(IBusinessEntity entity, ExecutionContext context, Boolean verifyAction) +0x3: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #C2F3BDF7</Message>
    <Timestamp>2021-02-23T09:23:29.330478Z</Timestamp>
    <ExceptionRetriable>false</ExceptionRetriable>
    <ExceptionSource i:nil="true" />
    <InnerFault i:nil="true" />
    <OriginalException i:nil="true" />
    <TraceText i:nil="true" />
  </InnerFault>
  <OriginalException i:nil="true" />
  <TraceText i:nil="true" />
</OrganizationServiceFault>

Server stack trace: 
   at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: 
   at Microsoft.Crm.Tools.Libraries.RegistrationHelper.RegisterAssembly(CrmOrganization org, String pathToAssembly, CrmPluginAssembly assembly)
   at Microsoft.Crm.Tools.AssemblyRegistration.PluginRegistrationViewModel.btnregisterClick()

SOLUTION:

Its just about selecting correct and compatible versions of .NET Framework and Core Assembly.

While creating Class Library Project for Plugin Choose Class Library Project with .NET Framework and the Framework version a bit lower such as Framework 4.5.2.