Skype Connectivity and Messaging Problems [Status: Fixed]
On the official site of Skype developers reported that they are aware of an incident where users will either lose connectivity to the application or may be unable to send or receive messages.
Number of users confirming this error: ???
If you encounter this error, try to use Skype for browser
(at least I have the chat working properly).
Chronicle of events:
Error formally confirmed
The issue has been fully resolved.