register dll in web.config

I have a problem with my website...

I need to register a dll in my web.config bug when i try to open my site i have an error 500.

this is my configuration:

<system.web>
  <httpHandlers>
     <add verb="*" 
          path="bin\msodbcsql13.dll" 
          type="System.Web.Configuration.HttpHandlersSection"/>

 </httpHandlers>
</system.web>

i tried too with the full path. i use ODBC 13 drivers and Windows hosting.

edit:

this is the server log:

ModuleName  ConfigurationValidationModule
Notification    BEGIN_REQUEST
HttpStatus  500
HttpReason  Internal Server Error
HttpSubStatus   23
ErrorCode   The request is not supported.

 (0x80070032)
ConfigExceptionInfo