Could not load file or assembly 'Microsoft.Owin, Version=2.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35

Question

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.

Answer 1

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

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