After latest update of Azure tools, Visual Studio 2012 does not work correctly. Looks like an unresponsive application, loading project very long, menu does not work too and yo
The problem caused by Microsoft Azure HDInsight Tools for Visual Studio
which is new release and possible not compatible with Visual Studio 2012, however installs into the Visual Studio 2012 and causing problems at start.
To fix this problem, uninstall Microsoft Azure HDInsight Tools for Visual Studio
from the system.
(Just spent three days to fix it)