How to Resolve Server Error in '/' Application (Configuration Error)

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My web application was working perfectly minutes ago now I get this error when I run it.

How can I solve this issue since its not even part of my project files?

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly 'System.Web.Mobile, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The handle is invalid. (Exception from HRESULT: 0x80070006 (E_HANDLE)) (C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\web.config line 285)

Line 285: add name="ErrorHandlerModule" type="System.Web.Mobile.ErrorHandlerModule, System.Web.Mobile, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"**

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c#
visual-studio-2012
web-config
asked on Stack Overflow Feb 7, 2014 by Dumisani • edited Jun 20, 2020 by Community

2 Answers

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I probably should have done this before posting the question.

I saved my work then restarted Visual Studio.

answered on Stack Overflow Feb 7, 2014 by Dumisani
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It worked for me as well after restarting visual studio.

answered on Stack Overflow Sep 29, 2014 by Shridhar • edited Sep 29, 2014 by Shridhar

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