This paper fromMiniToolshows you a couple of useful ways to help you fix it.
For example, they encounter Photos app didnt start or explorer.exe the app didnt start.
Now we are going to tell you how to deal with it and access your apps successfully.
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Now I believe you already have a basic understanding of this error.
If it does not work, try the ways below.
Fix 1.

In this case, you might update it to the latest version to check whether the error still exists.
Fix 2.
Run Windows Store Apps Troubleshooter
You canrun Windows troubleshooter to fix PC problems.

PressWindows + Ikey combinations to open configs.
Then clickUpdate & Security.
Fix 3.
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Repair/Reset the App
Repairing the app is also an effective way to solve the app not opening issue.
If it does not work, you’re free to reset the system.
Now you could see two options:RepairandReset.

Choose the option based on your own needs.
This article describes some proven methods to fix the program is running but not showing issue.
Fix 4.
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So, you’re gonna wanna apply the steps below to check for the software permission.
PressWindows + Rkey combinations to open Run.
In the run window, typeregeditand pressEnter.
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In theUAC window, selectYes.
In the pop-up window, under theGroup or user namessection, selectALL utility PACKAGESand check theReadpermission is set toAllow.
Fix 5.
To scan and repair corrupted system files, you canrun System File Checker (SFC).
SFC will scan all protected system files and replace corrupted files with a cached copy.
Even worse, corrupted system files can lead to personal data loss or even system crashes.
you’re able to free download it to have a try.