SQL Server Object Explorer in VS2015 Professional not showing Azure database
Use that latest Visual Studio 2019 Community edition, which contains the latest version of SQL Server Data Tools with SQL Server Object Explorer
I ran into the same problem. I decided to upgrade to the latest as of now Azure SDK 2.7. This fixed my server explorer panel and also added in a new panel called Cloud Explorer. This will hopefully get you going. Here is the link:
https://azure.microsoft.com/blog/2015/07/20/announcing-the-azure-sdk-2-7-for-net/