I have an application and everything worked fine before. Now I noticed that application fails. NO CODE WAS CHANGED! The problem is that no refresh_token is returned now.

I'm using following to get refresh_token:

https://login.salesforce.com/services/oauth2/authorize?response_type=token&client_id={MyID}&redirect_uri={CallBackUri}

Response contains almost everything, including access_token, signature and etc., but  no refresh_token param.