Windows 10: Why don't my icons on my taskbar show up?

My applications appear on the taskbar, but the icon of the application doesn't show and it's only for some application.
I don't think I can explain it better than that, but I will post a picture with this because I don't know what to look for to fix this.

:)

 

System Icons on taskbar

Hi,

Thank you for posting on Microsoft Communities.

Are you referring to the clock system icon on the taskbar?

If so, I suggest you to follow the steps mentioned below:

• 
  Click on the search bar on the taskbar.
  
• 
  Type system icons.
  
• 
  Under Turn System Icons ON or OFF, turn On the Clock and check with the issue.
  

Hope it helps.

 

Taskbar icons

Hi,

To address your concern, follow the steps below on how to show hidden icons on the taskbar.

• Open Settings, and click on the Personalization
  icon.
• Click on Taskbar on the left side, and click on the
  Select which icons appear on the taskbar link under the Notification area section on the right.
• Turn on Always show all icons in the notification area at the top

Let us know how it goes.

 

stuff that don`t work

Nice, no answers what so ever... still can`t open new notifications, still right-click don`t work on taskbar... and still no answer as to why