update to Appliance Network Unavailable TSG

Author: alt-key

articles/azure-arc/resource-bridge/troubleshoot-resource-bridge.md

@@ -38,7 +38,7 @@ To resolve this issue, delete the appliance and update the appliance YAML file.
 
 ### Appliance Network Unavailable 
 
-If Arc resource bridge is experiencing a network communication problem, you may see an "Appliance Network Unavailable" error when trying to perform an action that interacts with the resource bridge or an extension operating on top of the bridge. This error can also surface as "Error while dialing dial tcp xx.xx.xxx.xx:55000: connect: no route to host" and this is typically a network communication problem. The problem could be that communication from the host to the Arc resource bridge VM needs to be opened with the help of your network administrator. It could be that there was a temporary network issue not allowing the host to reach the Arc resource bridge VM and once the network issue is resolved, you can retry the operation. 
+If Arc resource bridge is experiencing a network communication problem or is offline, you may see an "Appliance Network Unavailable" error when trying to perform an action that interacts with the resource bridge or an extension operating on top of the bridge. In general, any network or infrastructure connectivity issue to the appliance VM may cause this error. This error can also surface as "Error while dialing dial tcp xx.xx.xxx.xx:55000: connect: no route to host" and this is typically a network communication problem. The problem could be that communication from the host to the Arc resource bridge VM needs to be opened with the help of your network administrator. It could be that there was a temporary network issue not allowing the host to reach the Arc resource bridge VM and once the network issue is resolved, you can retry the operation. You may also need to check that the appliance VM for Arc resource bridge is not stopped. In the case of Azure Stack HCI, the host storage may be full which has caused the appliance VM to pause and the storage will need to be addressed. 
 
 ### Connection closed before server preface received