Taskbar has disappeared on Windows 10
We will be taking a look at four methods that will help us fix the disappearing Taskbar from the Windows desktop: Before you begin, I recommend that you create a System Restore Point.
Restore missing taskbar
1] Restart Explorer process
While it sounds really basic, it has proven to be working for many. If anything gets stuck on the taskbar or system tray, this is the best way to restart explorer.exe. You should see Taskbar appearing as this will reload the whole Windows Shell.
2] Unhiding it using the Settings App
Launch the Windows 10 Settings app (using Win+I) and navigate to Personalization > Taskbar. Under the main section, make sure that the option labeled as Automatically hide the taskbar in desktop mode is toggled to the Off position. If it is already off and you are not able to see your Taskbar, just try another method.
3] Disabling Tablet Mode
If the Tablet Mode is activated on your computer, the Taskbar might get hidden due to the System settings. You can try to Turn the Tablet Mode off and check if that fixes your issue.
4] Checking Projection Settings
Hit the WINKEY + P button combination on your keyboard.
Windows Projection settings will pop up. Make sure that you select PC Screen Only option and then check if your Taskbar has appeared and is working properly or not.
Taskbar keeps disappearing randomly
If your Taskbar keeps disappearing at times, you may want to check the Auto Hide Taskbar settings. I hope something here helped you. Related read: Taskbar is not hiding.