Sometimes you may find that your System Tray Notification Area Icons, like Clock, Volume, Network or Power missing or momentarily disappeared in Windows 10/8/7. If you face this issue, here is how you can resolve the issue.
System icons not showing in Taskbar
Right-lick Taskbar and choose ‘Properties’. Then from the ‘Taskbar Properties’ window select ‘Customize’.
Next, select which Icons and notifications should appear on your taskbar and hit the ‘OK’ button.
If this does not solve your problem, or if you find that the areas are grayed out, try this registry tweak.
Turn system icons on or off grayed out
On my Windows I found their first instance in Key:
You will also normally find IconStreams & PastIconsStream in the right side pane of
Now enable the system icons using the above regular method. Do note that in case your computer has multiple user accounts you may have to enable icons for each account.
Windows 10 users may open Settings > Personalization > Taskbar and then click Turn system icons on or off, link.
Make sure that the behavior for Power, Network, and Volume are set correctly, and then click OK.
Hope this helps.
Related read: Taskbar icons are invisible, blank or missing in Windows 10.