1. Browser Settings (Example : Internet Explorer 11) for best user experience

For best user experience with CMx, enabling below browser setting is recommended:

• Add your CMx URL to trusted sites in your Browser. 
  For example if you are using IE 11 , follow below steps (Note: In different browsers , this setting will be usually in Browser Options or Browser Preferences)
  In IE 11, Click on the Tools Settings icon → Internet Options → Security Tab → Trusted Sites → Click sites button