System.Buffers versions conflicts for 2025v2

System.Buffers versions conflicts for 2025v2

Posted by: enrique.pv-ext on 16 February 2026, 11:29 am EST

• 

  enrique.pv-ext

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  Posted 16 February 2026, 11:29 am EST

  Hi all,
  
  using C1.C1Report.4.8 and C1.Web.Wijmo.Controls.48 in ASP NET WebForms net framework 4.8.1

  Assemblies:
  
  C:\GIT\repos\MYPROJ\packages\System.Buffers.4.6.0\lib\net462\System.Buffers.dll
  
  C:\GIT\repos\MYPROJ\packages\DS.Documents.Imaging.7.2.6\lib\net461\DS.Documents.Imaging.dll
  
  C:\GIT\repos\MYPROJ\packages\System.Memory.4.6.3\lib\net462\System.Memory.dll

  System.Buffers, Version=4.0.4.0
  
  vs
  
  System.Buffers, Version=4.0.5.0

  I get:

  warning MSB3277: Se han encontrado conflictos entre distintas versiones de "System.Buffers" que no se han podido resolver.
  warning MSB3277: Existía un conflicto entre 
  "System.Buffers, Version=4.0.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"
   y "System.Buffers, Version=4.0.5.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51".
  warning MSB3277:     Se eligió "System.Buffers, Version=4.0.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" porque era principal
   y "System.Buffers, Version=4.0.5.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" no lo era.
  warning MSB3277:     Referencias que dependen de "System.Buffers, Version=4.0.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" 
  [C:\GIT\repos\MYPROJ\packages\System.Buffers.4.6.0\lib\net462\System.Buffers.dll].
  warning MSB3277:         C:\GIT\repos\MYPROJ\packages\System.Buffers.4.6.0\lib\net462\System.Buffers.dll
  warning MSB3277:           Atributos Include de elementos de archivo del proyecto que provocaron la referencia "C:\GIT\repos\MYPROJ\packages\System.Buffers.4.6.0\lib\net462\System.Buffers.dll".
  warning MSB3277:             System.Buffers, Version=4.0.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL
  warning MSB3277:             DS.Documents.Imaging, Version=7.2.6.0, Culture=neutral, PublicKeyToken=d55d733d2bfd5065, processorArchitecture=MSIL
  warning MSB3277:             C1.C1Report.4.8, Version=4.8.20251.721, Culture=neutral, PublicKeyToken=594a0605db190bb9, processorArchitecture=MSIL
  warning MSB3277:             C1.Web.Wijmo.Controls.48, Version=4.8.20252.399, Culture=neutral, PublicKeyToken=9b75583953471eea, processorArchitecture=MSIL
  warning MSB3277:             C1.Web.Wijmo.Controls.Design.48, Version=4.8.20252.399, Culture=neutral, PublicKeyToken=9b75583953471eea, processorArchitecture=MSIL
  warning MSB3277:         C:\GIT\repos\MYPROJ\packages\DS.Documents.Imaging.7.2.6\lib\net461\DS.Documents.Imaging.dll
  warning MSB3277:           Atributos Include de elementos de archivo del proyecto que provocaron la referencia "C:\GIT\repos\MYPROJ\packages\DS.Documents.Imaging.7.2.6\lib\net461\DS.Documents.Imaging.dll".
  
  warning MSB3277:             DS.Documents.Imaging, Version=7.2.6.0, Culture=neutral, PublicKeyToken=d55d733d2bfd5065, processorArchitecture=MSIL
  warning MSB3277:             C1.C1Report.4.8, Version=4.8.20251.721, Culture=neutral, PublicKeyToken=594a0605db190bb9, processorArchitecture=MSIL
  warning MSB3277:             C1.Web.Wijmo.Controls.48, Version=4.8.20252.399, Culture=neutral, PublicKeyToken=9b75583953471eea, processorArchitecture=MSIL
  warning MSB3277:             C1.Web.Wijmo.Controls.Design.48, Version=4.8.20252.399, Culture=neutral, PublicKeyToken=9b75583953471eea, processorArchitecture=MSIL
  warning MSB3277:     Referencias que dependen o se han unificado para "System.Buffers, Version=4.0.5.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" [].
  warning MSB3277:         C:\GIT\repos\MYPROJ\packages\System.Memory.4.6.3\lib\net462\System.Memory.dll
  warning MSB3277:           Atributos Include de elementos de archivo del proyecto que provocaron la referencia "C:\GIT\repos\MYPROJ\packages\System.Memory.4.6.3\lib\net462\System.Memory.dll".
  warning MSB3277:             System.Memory, Version=4.0.5.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL
  warning MSB3277:             DS.Documents.Imaging, Version=7.2.6.0, Culture=neutral, PublicKeyToken=d55d733d2bfd5065, processorArchitecture=MSIL
  warning MSB3277:             C1.C1Report.4.8, Version=4.8.20251.721, Culture=neutral, PublicKeyToken=594a0605db190bb9, processorArchitecture=MSIL
  warning MSB3277:             C1.Web.Wijmo.Controls.48, Version=4.8.20252.399, Culture=neutral, PublicKeyToken=9b75583953471eea, processorArchitecture=MSIL
  warning MSB3277:             C1.Web.Wijmo.Controls.Design.48, Version=4.8.20252.399, Culture=neutral, PublicKeyToken=9b75583953471eea, processorArchitecture=MSIL

  Any suggestions ?

• 

  uttkarsh.matiyal

  

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  Posted 18 February 2026, 2:04 am EST

  Hello Enrique,

  Your project includes DS.Documents.Imaging 7.2.6, which depends on System.Buffers (>= 4.4.0), and System.Memory 4.6.3, which depends on System.Buffers (>= 4.6.1). Because of this, the System.Buffers package version currently referenced in the project is too low and might be causing the MSB3277 conflict.

  Please update the System.Buffers NuGet package to version 4.6.1 or later so that it satisfies the requirements of both dependencies.

  After updating the package, add or update the binding redirect entry for System.Buffers in your web.config file as shown below:

  <configuration>
    <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
          <assemblyIdentity name="System.Buffers"
                            publicKeyToken="cc7b13ffcd2ddd51"
                            culture="neutral" />
          <bindingRedirect oldVersion="0.0.0.0-4.0.5.0"
                           newVersion="4.0.5.0" />
        </dependentAssembly>
      </assemblyBinding>
    </runtime>
  </configuration>

  If the warning still appears after these changes, please share the following so we can review the dependency graph in detail:

  1. Your project file (*.csproj or *.vbproj) to verify all referenced packages and assemblies
  2. Your web.config file

  Regards,
  
  Uttkarsh.