These are default build-in apps that come pre-installed while installing upgrade to windows 10.
Sometimes after a recent windows 10 upgrade, you may notice certain apps missing.
Or after installing the latest updates, Apps does not perform properly, Crashes, or Not respond.
Or for some others number of apps get broken and not work properly.
In Such Causes, we recommend resetting the app following the steps below.
Simply Ignore the Red lines after complete the command Restart windows to get a fresh start.
Now check apps related problems get resolved.
Check the below commands to Re-register only a Specific windows app.
On Admin PowerShell typeGet-AppxPackage -AllUsers | Select Name, PackageFullNameand hit the enter key.
This will display available packages (for installation) on your rig.
look for the App that you want to re-register (re-install) for the current user.
( for ex:Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c) and the perform command below.
Select theKeep may filesoptions.
and follow on-screen instructions toreset Windows 10 Without effecting files.