Open Regedit, then go here:
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer]
Look for EnableAutoTray and set the value from 0 to 1
Then run this cmd:
explorer shell:::{05d7b0f4-2121-4eff-bf6b-ed3f69b894d9}
The check box for showing all items should be interactable.