i'm using Visual studio 2019 with .Net framework 4.7.2 and Microsoft.CrmSdk.CoreAssemblies.9.0.2.26 for plugin.
while registering plugin through "Plugin registration tool" i'm getting "Error occurred while registering the assembly". and error log says as below..
ERROR LOG:
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="">schemas.microsoft.com/.../Contracts" xmlns:i="">www.w3.org/.../XMLSchema-instance">
<ActivityId>69785581-ac5d-4d40-bf1d-cc51c00cb1b7</ActivityId>
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:a="">schemas.datacontract.org/.../System.Collections.Generic">
<KeyValuePairOfstringanyType>
<a:key>ApiExceptionSourceKey</a:key>
<a:value i:type="b:string" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiOriginalExceptionKey</a:key>
<a:value i:type="b:string" xmlns:b="">www.w3.org/.../XMLSchema">Microsoft.Crm.CrmException: An unexpected error occurred. ---> 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.<>c__DisplayClass3_0.<RunStep>b__0()</a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiStepKey</a:key>
<a:value i:type="b:guid" xmlns:b="">schemas.microsoft.com/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiDepthKey</a:key>
<a:value i:type="b:int" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiActivityIdKey</a:key>
<a:value i:type="b:guid" xmlns:b="">schemas.microsoft.com/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiPluginSolutionNameKey</a:key>
<a:value i:type="b:string" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiStepSolutionNameKey</a:key>
<a:value i:type="b:string" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiExceptionCategory</a:key>
<a:value i:type="b:string" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiExceptionMesageName</a:key>
<a:value i:type="b:string" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<a:key>ApiExceptionHttpStatusCode</a:key>
<a:value i:type="b:int" xmlns:b="">www.w3.org/.../a:value>
</KeyValuePairOfstringanyType>
</ErrorDetails>
<HelpLink>go.microsoft.com/.../
<Message>An unexpected error occurred.</Message>
<Timestamp>2020-06-18T04:38:18.5980082Z</Timestamp>
<ExceptionRetriable>false</ExceptionRetriable>
<ExceptionSource i:nil="true" />
<InnerFault>
<ActivityId>69785581-ac5d-4d40-bf1d-cc51c00cb1b7</ActivityId>
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:a="">schemas.datacontract.org/.../System.Collections.Generic" />
<HelpLink i:nil="true" />
<Message>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): Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #EA15E8F4</Message>
<Timestamp>2020-06-18T04:38:18.5980082Z</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()