Unable to find or download required files for managed minidump debugging. See Output window for additional information. Managed ...

Unable to find or download required files for managed minidump debugging. See Output window for additional information. Managed minidump debugging is disabled. Restart debug session after trying one or more of the following steps: 
 1. Specify the path to the required file or files in Symbol Settings under Debugger options.
 2. Enable symbol loading from Microsoft symbol servers.
 3. Select 'Debug with Native Only'.