Question 87862 in ASP.NET Question posted in
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Could not load file or assembly 'Microsoft.Owin, Version=2.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 – Asp.net

Upon running in local my website has the below error.

I have checked the DLLs, its the latest 4.2.0.

LOG: DisplayName = Microsoft.Owin, Version=2.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
(Fully-specified)
Calling assembly : Microsoft.AspNet.SignalR.Core, Version=2.4.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.

WRN: Comparing the assembly name resulted in the mismatch: Major Version
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

Nugets which i have upgraded:

  • Newtonsoft.Json.13.0.1
  • Microsoft.Owin.Host.SystemWeb.4.2.0
  • Microsoft.Owin.Security.4.2.0
  • Microsoft.Owin.4.2.0
  • Owin.1.0
  • Microsoft.AspNet.SignalR.SystemWeb.2.4.2
  • Microsoft.AspNet.SignalR.Core.2.4.2
  • Microsoft.AspNet.SignalR.2.4.2
  • Microsoft.AspNet.SignalR.JS.2.4.2

I have checked the binding the web.config, all seems to be correct.

Reinstalled via the nuget. Still cant overcome the mentioned issue.

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2

Answers


  1. Chosen as BEST ANSWER
    0

    Have to remove the xmlns to just and it working thank you.

    <configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0"


  2. 0

    Change the version of, Microsoft.Owin, Version=2.1.0.0 to Microsoft.Owin, Version=4.2.0.0

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