Plugin registration tool is not getting connected to dynamics 365 on-premise with an error log as follows. The server timings are the same so the issue might be something else. We have also tried with Xrm Toolbox as well but the result is the same.
at System.ServiceModel.Channels.SecurityChannelFactory`1.SecurityRequestChannel.ProcessReply(Message reply, SecurityProtocolCorrelationState correlationState, TimeSpan timeout)
at System.ServiceModel.Channels.SecurityChannelFactory`1.SecurityRequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
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)
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Microsoft.Xrm.Sdk.IOrganizationService.RetrieveMultiple(QueryBase query)
at Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.RetrieveMultipleCore(QueryBase query)
at QBBCRMIntegration.BusinessLogic.CrmOperations.RetrieveMultiple(QueryBase queryBase) in C:\Josy Projects\QBB 09-01-2020\GBMQBBWebAPI\QBBCRMIntegration\CRM.BusinessLogic\Common\CrmOperations.cs:line 127
at QBBCRMIntegration.CRM.BusinessLogic.Repository.CrmAdminsettingsRepository.GetallAdminsettings() in C:\Josy Projects\QBB 09-01-2020\GBMQBBWebAPI\QBBCRMIntegration\CRM.BusinessLogic\Repository\CrmAdminsettingsRepository.cs:line 36qbbprmpprs01/.../AdminSettingsAPI. Error Message:An unsecured or incorrectly secured fault was received from the other party. See the inner FaultException for the fault code and detail.