diff --git a/lib/web.config b/lib/web.config
index 599a5f260..58c9c3ac3 100644
--- a/lib/web.config
+++ b/lib/web.config
@@ -1,8 +1,13 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
-  <system.web>
-          <authorization>
-                  <deny users="*" /> <!-- Denies all users -->
-          </authorization>
-  </system.web>
+  <system.webServer>
+    <security>
+      <requestFiltering>
+         <fileExtensions applyToWebDAV="false" allowUnlisted="false"></fileExtensions>
+      </requestFiltering>
+      <authorization>
+        <deny users="*" /> <!-- Denies all users -->
+      </authorization>
+    </security>
+  </system.webServer>
 </configuration>
\ No newline at end of file