How Can I Resolve Impersonation Error/?

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i have impersonation set to true in my web.config file and supplied the username and the password, which has admin rights. Why am i getting this error?

Could not load file or assembly 'Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. Either a required impersonation level was not provided, or the provided impersonation level is invalid. (Exception from HRESULT: 0x80070542)

Posted 9-May-14 6:24am

Member 10736689

Updated 16-Nov-17 10:44am

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Kschuler 9-May-14 15:32pm

Does the user that you are impersonating have the appropriate rights to whatever you're trying to access?

Member 10736689 19-May-14 12:25pm

Yes it has full control

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Member 13525589 · Answer 1 · 2017-11-16T10:44:00

I ran into this same problem, when trying to use a Windows app to call into a web-service using impersonation. The windows app was launched from Visual Studio, and at first I assumed it would "inherit" my authorization (since I was using my admin credentials in the code); but it would not work UNTIL I restarted Visual Studio, running it as Admin. That fixed it.