To show all icons in the notification area in Windows 10:
- Right click the taskbar
- click Properties
- Next to the Notification area label, click the Customize button
- Click Select which icons appear on the taskbar
- At the top of the list, click Always show all icons in the notification area to turn it on
All icons will now how in the notification area. To show all icons in the notification area in Windows 10 using the registry, change this registry setting:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer
EnableAutoTray DWORD
0 = On
1 = Off