Galhano //127.0.0.1

add the following to the web.config as follows:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <security>
      <requestFiltering>
        <fileExtensions allowUnlisted="true" >
          <remove fileExtension=".mdb" />
          <add fileExtension=".mdb" allowed="true"/>
        </fileExtensions>
      </requestFiltering>
    </security>
  </system.webServer>
</configuration>

MIME Type must be registered on IIS