I have recently run into a problem with installing SharePoint hosted applications, as well as SharePoint provider apps.
The SharePoint 2013 instance can accept new apps to deploy directly from our Visual Studio 2012 installation, or through new app to deploy webpart. However SharePoint UI always reports the app is still installing, sometime after over 30 minutes, and never failed or finished. The application can be a sample application downloaded from MSDN samples, and normally take only 1 to 2 minutes to install.
Can anyone suggested what might have happened to the SharePoint 2013 instance, and how to trouble-shoot this kind of problem?