Method One:
Press the shortcut key [Ctrl+Alt+Del] to open the task manager, switch to the [Process] tab, select [Windows Explorer], and click [Restart]. Wait until the restart is complete, and then try to right-click the taskbar.

Method Two:
1. Click the "Cortana" voice search box in the lower left corner of the desktop, enter "PowerShell", find the [Desktop application Windows PowerShell] option, right-click the tool and select [Run as administrator];
2. Run the "Windows PowerShell" program, copy and paste the following commands into the command prompt interface and press Enter to execute:
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}.
3. The "system deployment process" operation process takes 2 to 10 minutes, please wait patiently.

Method Three:
1. Enter the start menu, click [Settings], and enter [Personalization];
2. Click the [Start] option on the left, and close the "Display recently opened items in the jump list on the ‘Start’ screen or taskbar" on the right.