How to resolve errors when i update Microsoft.ReportViewer to version from


I have an old project in MVC in which I updated the rdlc report version from to But after updating I got a bunch of errors some of them I solved but this is not solving given below.

Inner Exception 2:
ReportProcessingException: An unexpected error occurred in Report Processing.

Inner Exception 3:
FileLoadException: Could not load file or assembly 'Microsoft.ReportViewer.ProcessingObjectModel, Version=, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
asked on Stack Overflow Jan 28, 2020 by nado1122 • edited Jan 28, 2020 by Hamed Moghadasi

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