# IT:AD:ASP.NET:WebAPI:HowTo:OData:Microsoft.aspnet.odata Vs Microsoft.aspnet.webapi.odata #
* [[../|(UP)]]
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There are multiple versions of OData -- and for some reason, Microsoft released the relative assemblies under different names.
## Process ##
* OData V3: `Microsoft.AspNet.WebApi.OData`
* References:
* `Microsoft.Data.OData` (OData v1-3)
* OData V4: `Microsoft.AspNet.OData` <- **note:** the one to add to new apps.
* References:
* `Microsoft.OData.Core`
* `Microsoft.AspNet.OData` (the earlier OData v1-3, see above)
## Resources ##
* https://stackoverflow.com/a/38774327/8076190