If you can’t type anything in the Windows 10 search bar, please try two of these methods:
Method 1:
Right click on the start menu or press Windows + X keys on the keyboard, select and open Command prompt (admin).
Then enter the below commands and hit Enter key:
Command 1:
PowerShell -ExecutionPolicy Unrestricted
Now enter the below command and hit Enter key:
Command 2:

Get-AppXPackage -AllUsers |Where-Object {$_.InstallLocation -like /”*SystemApps*/”} | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register /”$($_.InstallLocation)//AppXManifest.xml/”}

If the issue still persist, follow the second method:
Method 2:
Open the Task manager by pressing CTRL+Shift+ESC keys. Or you can open it by right clicking on the taskbar if it works.
Then click File an then Run New Task. Make sure you have a check mark beside “Create this task with administrative privileges”. Now type Powershell.
Type the following in the Powershell prompt:

$manifest = (Get-AppxPackage Microsoft.WindowsStore).InstallLocation + ‘//AppxManifest.xml’ ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest

Wait till the process completed and then close the Powershell window. Now, reboot the computer and check if it helps.
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