Could not load file or assembly Microsoft.Data.Services.Client

Question

I have added the reference to these in my csproj file as shown below:
<Reference Include="System.Spatial, Version=5.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>$(PkgSystem_Spatial)\lib\net40\System.Spatial.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.Edm, Version=5.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>$(PkgMicrosoft_Data_Edm)\lib\net40\Microsoft.Data.Edm.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.OData, Version=5.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>$(PkgMicrosoft_Data_OData)\lib\net40\Microsoft.Data.OData.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.Services.Client, Version=5.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>$(PkgMicrosoft_Data_Services_Client)\lib\net40\Microsoft.Data.Services.Client.dll</HintPath>
</Reference>

When I run my program i get the following exception:
Exception: -{"Could not load file or assembly 'Microsoft.Data.Services.Client, Version=5.6.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)":"Microsoft.Data.Services.Client, Version=5.6.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"} System.Exception {System.IO.FileLoadException}

Not sure why it is trying to load **5.6.3.0 though I have specified 5.8.1.0 in the Reference version.**

Answer 1

First check what version of this dll you have in your output directory. I'll bet that is 5.6.3.0, so:

• clean your solution
• delete all obj and bin directories
• uninstall this package from the whole solution
• ensure to delete this file in GAC: &userprofile%.nuget\packages\microsoft.data.services - make sure to delete whole directory
• now you can install from NuGet the required version