diff --git a/moonlight-common-c b/moonlight-common-c
index 247b1fe..f596e80 160000
--- a/moonlight-common-c
+++ b/moonlight-common-c
@@ -1 +1 @@
-Subproject commit 247b1fe0e32d80ce02ede4c2b4a835b9c085abe4
+Subproject commit f596e805755cf0b83c14375bc5c9aa182b1766e0
diff --git a/static/js/messages.js b/static/js/messages.js
index 07cb05f..1cbcc60 100644
--- a/static/js/messages.js
+++ b/static/js/messages.js
@@ -43,7 +43,12 @@ function handleMessage(msg) {
       // Show a termination snackbar message if the termination was unexpected
       var errorCode = parseInt(msg.data.replace('streamTerminated: ', ''));
       if (errorCode !== 0) {
-        snackbarLogLong("Connection terminated");
+        if (errorCode === -100) { // ML_ERROR_NO_VIDEO_TRAFFIC
+          snackbarLogLong("No video received from host. Check the host PC's firewall and port forwarding rules.");
+        }
+        else {
+          snackbarLogLong("Connection terminated");
+        }
       }
 
       api.refreshServerInfo().then(function(ret) {