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Editorial Team
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Asked: 2026-06-15T03:24:25+00:00

After a succesfull uppgrade from EPi5 to EPi6 i get this error Error 101

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After a succesfull uppgrade from EPi5 to EPi6 i get this error

    Error   101 Assembly 'EPiServer.Web.WebControls, Version=6.0.530.0, Culture=neutral,
 PublicKeyToken=8fe83dea738b45b7' uses 'EPiServer, Version=6.0.530.0, Culture=neutral, 
PublicKeyToken=8fe83dea738b45b7' which has a higher version than referenced assembly 'EPiServer, 
Version=5.2.375.236, Culture=neutral, PublicKeyToken=8fe83dea738b45b7'  
c:\EPiServer\Sites\UppgraderaSiteName\SiteName.Web\bin\EPiServer.Web.WebControls.dll    
SiteName.Web

The DLL is configured in web.config as 6.0.530.0
In the reference it says 6.0.530.0
The DLL file also says 6.0.530.0

There is something im not getting.

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1 Answer

  1. Editorial Team

    Try deleting the references of “EPiServer.Web.WebControls.dll” from the Solution Explorer & then add references of correct version.

    Also, you can open the Project Files (“.csproj” or “.vbproj”) in notepad & check the <Reference/> Elements, to verify that correct version is being used:

    <Project>
  <ItemGroup>
    <Reference/>
    ...
    <Reference/>
  </ItemGroup>
</Project>
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