Guys,
I finally solved my problem. In my case it was simply add the lines below in web.config file.
<system.web>
<httpRuntime maxRequestLength="102400" executionTimeout="3600" />
</system.web>
and
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="100000000" />
</requestFiltering>
</security>
</system.webServer>
Good luck for all,
Jonatas