Users on Skype’s community forums have discovered a bug that renders the app unusable when you received a message that contains a particular string.

And you might wonder what would be the string and how many character it’s, Don’t you? This ‘http://’ is enough to crash your friends Skype and you can’t use your skype until you delete that from your chat history.

The app instantly crashing the app on Android, iOS and Windows devices as well.

In a statement to VentureBeat, Skype acknowledged the existence of the bug said that.

We are aware of the problem and are working to provide an resolution.

Skype user “Lazymax” notes that you can get around the bug if the person who sent you the characters deletes the “bad” message. If you then install an older version of Skype, you can use it again.