Related to: U4-7264 Support for folder upload

Enable a larger file max size for upload as 4mb is quickly very
limiting.

src/Umbraco.Web.UI/web.Template.config

@@ -79,7 +79,7 @@
   <system.web>
     <customErrors mode="RemoteOnly" />
     <trace enabled="true" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" />
-    <httpRuntime requestValidationMode="2.0" enableVersionHeader="false" targetFramework="4.5" />
+    <httpRuntime requestValidationMode="2.0" enableVersionHeader="false" targetFramework="4.5" maxRequestLength="1048576" />
     <!--
       If you are deploying to a cloud environment that has multiple web server instances,
       you should change session state mode from "InProc" to "Custom". In addition,
@@ -222,6 +222,13 @@
         <remove name="X-Powered-By" />
       </customHeaders>
     </httpProtocol>
+
+    <!-- Increase the default upload file size limit -->
+    <security>
+      <requestFiltering>
+        <requestLimits maxAllowedContentLength="1073741824" />
+      </requestFiltering>
+    </security>
     
   </system.webServer>