Restore-SPSite : The content type text/html; charset=utf-8 of the response mess age does not match the content type of the binding (application/soap+msbin1). I f using a custom encoder, be sure that the IsContentTypeSupported method is imp lemented properly

I got this while restoring SharePoint 2010 site. After lot of efforts I have found something wrong in my web.config files.

Make sure all nodes are implemented properly in the web.config files especially when you are working with forms based configuration. 

if you have any duplicate nodes or spaces it might get this error.

Check below web.config files 

1) Central administration

2) Your Web App

3) 14\Security Token\Web.Config

for ex,

<connectionStrings>

      <add name="SQLConnectionString" connectionString="server=servername;UID=webuser;PWD=1230;database=UsersDB; connection reset=false; enlist=true; min pool size=1; max pool size=125" providerName="System.Data.SqlClient" />

</connectionStrings>

<membership defaultProvider="i">

      <providers>

        <add name="i" type="Microsoft.SharePoint.Administration.Claims.SPClaimsAuthMembershipProvider, Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />

        <<add connectionStringName="SQLConnectionString" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="true" passwordAttemptWindow="10" applicationName="/" requiresUniqueEmail="false" passwordFormat="Hashed" name="myMemberProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

      </providers>

    </membership>

    <roleManager defaultProvider="c" enabled="true" cacheRolesInCookie="false">

      <providers>

        <add name="c" type="Microsoft.SharePoint.Administration.Claims.SPClaimsAuthRoleProvider, Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />

  <add connectionStringName="SQLConnectionString" applicationName="/" name="myRoleProvider" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />      </providers>

    </roleManager>