Outlook not launching with External Mail Client Selected

I have set my mail option to “External EMail Client” in my setup, however clicking on “Compose EMail” under Activities does not cause Outlook to launch (even when it is already open). Am I missing something somewhere else?

Please always share your

  1. Server info like OS
  2. PHP version
  3. MySQL version
  4. SuiteCRM Version

Also, any additional information to understand the exact issue.