diff --git a/sample.env b/sample.env
index 1a9db9c3..1ff784ca 100644
--- a/sample.env
+++ b/sample.env
@@ -7,9 +7,6 @@
 # fully automated Lets Encrypt certificates
 ENABLE_HTTPS_PROXY=true
 
-# coturn (a TURN Server)
-# requires HTTPS Proxy to be enabled
-ENABLE_COTURN=true
 
 # Greenlight Frontend
 # https://docs.bigbluebutton.org/greenlight/gl-overview.html
diff --git a/scripts/compose b/scripts/compose
index a5601264..431714d6 100755
--- a/scripts/compose
+++ b/scripts/compose
@@ -22,6 +22,30 @@ if [ -z "$EXTERNAL_IPv4" ]; then
     exit 1
 fi
 
+# check for blocked TURN port
+# https://github.com/bigbluebutton/docker/issues/73
+if [ -n "$TURN_SERVER" ]; then
+    port=$(echo $TURN_SERVER | awk -F: '{print $3}' | awk -F'?'  '{print $1}')
+    if [[ "$port" -lt "1024" ]] && [ "$port" != "443" ] && [ "$port" != "80" ]; then
+        echo "-------------------------------------"
+        echo "ERROR: you use the TURN port $port, which gets blocked by recent browser"
+        echo "releases, leading BBB throwing always an 1006 error, connecting impossible."
+        echo ""
+        echo "If you use the integrated TURN server, there is currently no way to make it"
+        echo "work. so you should disable the server by emptying the TURN_SERVER variable"
+        echo "in .env"
+        echo "If you use an external TURN server with an own IP, you should switch to"
+        echo "port 443"
+        echo ""
+        echo "More Information: https://github.com/bigbluebutton/docker/issues/73"
+        echo
+        echo "current setting:"
+        echo "TURN_SERVER=$TURN_SERVER"
+        echo "-------------------------------------"
+        exit 1
+    fi
+fi
+
 # set conditional variables
 export CERTIFICATE_DOMAINS=$DOMAIN
 export GREENLIGHT_ENDPOINT=https://$DOMAIN/bigbluebutton/api/
diff --git a/scripts/setup b/scripts/setup
index fbf12151..24179b48 100755
--- a/scripts/setup
+++ b/scripts/setup
@@ -33,12 +33,14 @@ while [[ ! $https_proxy =~ ^(y|n)$ ]]; do
 done
 
 coturn=""
-if [ "$https_proxy" == "y" ]
-then
-    while [[ ! $coturn =~ ^(y|n)$ ]]; do
-        read -p "Should a coturn be included? (y/n): " coturn
-    done
-fi
+# comment out due to blocked TURN ports
+# https://github.com/bigbluebutton/docker/issues/73
+# if [ "$https_proxy" == "y" ]
+# then
+#     while [[ ! $coturn =~ ^(y|n)$ ]]; do
+#         read -p "Should a coturn be included? (y/n): " coturn
+#     done
+# fi
 
 prometheus_exporter=""
 while [[ ! $prometheus_exporter =~ ^(y|n)$ ]]; do