diff --git a/browser/app/blocklist.xml b/browser/app/blocklist.xml
index 38856dbe6e2..b12c31f4cce 100644
--- a/browser/app/blocklist.xml
+++ b/browser/app/blocklist.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<blocklist xmlns="http://www.mozilla.org/2006/addons-blocklist" lastupdate="1360959670000">
+<blocklist xmlns="http://www.mozilla.org/2006/addons-blocklist" lastupdate="1361213668000">
   <emItems>
       <emItem  blockID="i58" id="webmaster@buzzzzvideos.info">
                         <versionRange  minVersion="0" maxVersion="*">
@@ -211,6 +211,8 @@
                         <versionRange  minVersion="0" maxVersion="*">
                     </versionRange>
                   </emItem>
+      <emItem  blockID="i10" id="{8CE11043-9A15-4207-A565-0C94C42D590D}">
+                        </emItem>
       <emItem  blockID="i258" id="helperbar@helperbar.com">
                         <versionRange  minVersion="0" maxVersion="1.0" severity="1">
                     </versionRange>
@@ -282,8 +284,10 @@
                         <versionRange  minVersion="0" maxVersion="*">
                     </versionRange>
                   </emItem>
-      <emItem  blockID="i10" id="{8CE11043-9A15-4207-A565-0C94C42D590D}">
-                        </emItem>
+      <emItem  blockID="i286" id="{58bd07eb-0ee0-4df0-8121-dc9b693373df}">
+                        <versionRange  minVersion="0" maxVersion="*" severity="3">
+                    </versionRange>
+                  </emItem>
       <emItem  blockID="i1" id="mozilla_cc@internetdownloadmanager.com">
                         <versionRange  minVersion="2.1" maxVersion="3.3">
                       <targetApplication  id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}">
diff --git a/browser/config/mozconfigs/win32/l10n-mozconfig b/browser/config/mozconfigs/win32/l10n-mozconfig
index 0b2952c004a..4d80fd3d7b9 100644
--- a/browser/config/mozconfigs/win32/l10n-mozconfig
+++ b/browser/config/mozconfigs/win32/l10n-mozconfig
@@ -4,6 +4,7 @@ ac_add_options --enable-update-channel=${MOZ_UPDATE_CHANNEL}
 ac_add_options --enable-update-packaging
 ac_add_options --with-l10n-base=../../l10n-central
 ac_add_options --enable-metro
+ac_add_options --with-windows-version=601
 
 export MOZILLA_OFFICIAL=1
 
diff --git a/browser/modules/webrtcUI.jsm b/browser/modules/webrtcUI.jsm
index a5b8e32ad96..77ad442c813 100644
--- a/browser/modules/webrtcUI.jsm
+++ b/browser/modules/webrtcUI.jsm
@@ -80,15 +80,20 @@ function handleRequest(aSubject, aTopic, aData) {
     function (error) {
       // bug 827146 -- In the future, the UI should catch NO_DEVICES_FOUND
       // and allow the user to plug in a device, instead of immediately failing.
-      let msg = Cc["@mozilla.org/supports-string;1"].
-                createInstance(Ci.nsISupportsString);
-      msg.data = error;
-      Services.obs.notifyObservers(msg, "getUserMedia:response:deny", callID);
-      Cu.reportError(error);
+      denyRequest(callID, error);
     }
   );
 }
 
+function denyRequest(aCallID, aError) {
+  let msg = null;
+  if (aError) {
+    msg = Cc["@mozilla.org/supports-string;1"].createInstance(Ci.nsISupportsString);
+    msg.data = aError;
+  }
+  Services.obs.notifyObservers(msg, "getUserMedia:response:deny", aCallID);
+}
+
 function prompt(aBrowser, aCallID, aAudioRequested, aVideoRequested, aDevices) {
   let audioDevices = [];
   let videoDevices = [];
@@ -113,8 +118,10 @@ function prompt(aBrowser, aCallID, aAudioRequested, aVideoRequested, aDevices) {
     requestType = "Microphone";
   else if (videoDevices.length)
     requestType = "Camera";
-  else
+  else {
+    denyRequest(aCallID, "NO_DEVICES_FOUND");
     return;
+  }
 
   let host = aBrowser.contentDocument.documentURIObject.asciiHost;
   let chromeDoc = aBrowser.ownerDocument;
@@ -173,7 +180,7 @@ function prompt(aBrowser, aCallID, aAudioRequested, aVideoRequested, aDevices) {
       }
 
       if (allowedDevices.Count() == 0) {
-        Services.obs.notifyObservers(null, "getUserMedia:response:deny", aCallID);
+        denyRequest(aCallID);
         return;
       }
 
@@ -197,7 +204,7 @@ function prompt(aBrowser, aCallID, aAudioRequested, aVideoRequested, aDevices) {
     label: stringBundle.getString("getUserMedia.denyRequest.label"),
     accessKey: stringBundle.getString("getUserMedia.denyRequest.accesskey"),
     callback: function () {
-      Services.obs.notifyObservers(null, "getUserMedia:response:deny", aCallID);
+      denyRequest(aCallID);
     }
   }];