For this purpose: 1: Press the Windows + I at once to launch Settings. 2: A page will open. Now click on the System. Then click search and the notifications and actions options on the left pane. 3: There you'll find the Quick action option. Now turn the system icons on.   4: Now search the Network option and check whether it's enabled or not.  Following these steps, your WiFi icon will appear again in the taskbar.