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Jestliže nejdou spustit výchozá aplikace windows - Universal Windows Platform (UWP) applications.
Spustit PowerShell jako administrátor
V PowerShellu zadat tento příkaz: Get-AppxPackage -allusers | foreach {Add-AppxPackage -register "$($_.InstallLocation)\appxmanifest.xml" -DisableDevelopmentMode}

zdroj:
https://www.digitalcitizen.life/how-rei ... powershell

citace:
How to reinstall all the Windows 10 default apps with PowerShell
TUTORIAL by Codrut Neagu published on 08/24/2018
Apps
Some people do not like the universal apps that are installed by default In Windows 10 and want to get rid of them. They can manually uninstall most of them using the Settings app, or they can use PowerShell to uninstall all or only some. Apps like Calendar, Mail, Camera, Photos or Candy Crush Soda Saga, can be gone from a Windows 10 computer in no time. The question is: how do you get all the default Windows 10 back, when you learn that you need them, or when they are broken and no longer work correctly? In this tutorial, we show you how to re-install and re-register all the default apps that are shipped with Windows 10. You should not worry, as this is a straightforward and simple process. Let's get started:

Important things to know before going further
The steps we show you in this tutorial help you reinstall all the default apps from Windows 10, including the Microsoft Store. However, note that everything we show is tested and confirmed to work only in the latest version of Windows 10 with April 2018 Update.

If you have an older version of Windows 10, you can follow the steps we show for getting the built-in apps back, but you might not be able to also re-install the Microsoft Store. The only proven way to get the Microsoft Store back in older versions of Windows 10, and then be able to install other apps, is to do a clean Windows 10 installation.

Step 1. Open PowerShell as Administrator
First of all, you must open PowerShell with administrative rights. The fastest way to do that is to use Cortana's search bar from the taskbar. Type "PowerShell," right-click (or tap and hold) on the Windows PowerShell result and then click or tap on "Run as administrator."

Windows 10, PowerShell, reinstall apps
You can find many other ways of opening PowerShell, in this tutorial: 9 ways to launch PowerShell in Windows (including as admin). Once PowerShell is launched, you should see a window similar to this one:

Windows 10, PowerShell, reinstall apps
Step 2. Run the reinstall and re-register command for built-in Windows 10 apps
To reinstall all the Windows 10 built-in apps which you uninstalled over time, all you have to do is run a specific command. Type or copy-paste the following command inside your PowerShell window:

Get-AppxPackage -allusers | foreach {Add-AppxPackage -register "$($_.InstallLocation)\appxmanifest.xml" -DisableDevelopmentMode}

Windows 10, PowerShell, reinstall apps
After you have entered the above command in Powershell, press Enter.

Immediately, Windows 10 starts reinstalling and re-registering all its default built-in apps. Note that this step might take a while, depending on the speed of your Windows 10 PC.

Windows 10, PowerShell, reinstall apps
Step 3. Reboot your Windows 10 device
Once the command has finished running, PowerShell displays the current folder path. There are no messages or additional confirmations displayed. Close PowerShell and reboot your Windows 10 PC or device. When you log in, you should find all your missing Windows 10 default apps available.