c# - Error after upgrading ASP.Net WebAPI nuget package -

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i have updated webapi nuget package 5.2.2 5.2.3 , started getting error,

the type 'system.web.http.apicontroller' exists in both 'c:\program files (x86)\microsoft asp.net\asp.net mvc 4\assemblies\system.web.http.dll' , '\packages\microsoft.aspnet.webapi.core.5.2.3\lib\net45\system.web.http.dll'

i tried cleaning solution/deleting reference , stuff not working. please help.

update#: reverting packages helped. still not sure if missed in upgrade.

i got same problem when getting microsoft.aspnet.webapi.

at nuget package manager console write this:

 update-package -projectname 'yourprojectnamegoeshere' -reinstall

this update packages , solve problem.i hope helps


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