Editing reports in Configuration Manager may fail when Internet Explorer is not the default browser
When attempting to edit reports in the Administrator Console on a System Center 2012 Configuration Manager Site Server you may receive the following error:
Application cannot be started. Contact the application vendor.
When attempting to edit reports from the ConfigMgr console installed on a client computer, the action may fail with the following error:
Cannot download the application. The application is missing required files. Contact application vendor for assistance.
I’ve updated the list of KB Articles for ConfigMgr 2012 accordingly.