Some times users will get a message that no default mail application is selected. 

In Registry Editor, locate and right-click the following subkey in the registry, and then click Permissions:

1. 
   HKEY_CLASSES_ROOT\Installer\Components\F1291BD604B860441AB89E60BDEE0F9C
   
   
2. Under Group or user names, find your own user name or a group that you're a member of (such as Users or Administrators).
3. Add the user and give Full permissons.