اگر با این خطا روبرو میشید:

با این متن:
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The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'Negotiate,NTLM'.
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OperationId = f382b3e4-1778-4c4a-b17b-f5d051f45ae0
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Program Location:
Server stack trace:
at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.End(SendAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeEndService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Microsoft.MasterDataServices.Services.ServiceContracts.IService.EndServiceVersionGet(IAsyncResult result)
at Microsoft.MasterDataServices.ExcelAddInCore.Types.Operations.ServiceVersionGetOperation.DoEndOperation(IAsyncResult ar)
at Microsoft.MasterDataServices.ExcelAddInCore.Operations.ServiceOperation.EndOperation(IAsyncResult ar)
at Microsoft.MasterDataServices.ExcelAddInCore.Operations.OperationExecuter.<>c__DisplayClass25_0.<ExecuteOperationAsync>b__1()
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
===================================
The remote server returned an error: (401) Unauthorized. (System)
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Program Location:
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelAsyncRequest.CompleteGetResponse(IAsyncResult result)
- مطمئن بشید ویندوزتون آپدیته
- ببینید سرور روی نام دامنه یا نام سیستم شما فیلتر شده یا نه.
- Control Panel\All Control Panel Items\Credential Manager\Add a windows credential \
- یادتون نره با دامنه مربوطه یوزرنیم رو وارد کنید. چون در اصل دارید توی سرور مربوطه این یوزر رو وارد میکنید.
- تمام!!