I am using Windows 8.1 [Update 1] and have recently had some issues with the Mail, Calendar, and People set of Modern UI apps. Out of nowhere, all of my Modern apps stopped working correctly, displaying an 'X' in the bottom-right corner of the tiles and saying "This app can't open. Check the Windows Store for more info about .
However, this is not the case.
Although I can reinstall most of the other apps and they open just fine, I have had some trouble with Mail, Calendar, and People. When I uninstalled the three applications and reinstall them from the Windows Store, they seemed to download and install 'instantaneously' [if my memory doesn't fail me]. Then, when I go to open any of them, it gives me the same error message, sans bottom-right X. When right-clicked, there is no 'Uninstall' selection for any of them.
I am using an Acer Aspire M5-533P-6428 touchbook. It has 8Gb RAM, an Intel i5-4200u quad-core processor, and a 500GB internal hard drive.
If there's any solution, please let me know ASAP. I need the Calendar for school and Mail for, obviously, managing e-mail.
[EDIT] When I attempt to open any of the three apps, it does not display a splash screen and simply gives me the error message at the Start Screen. Before the attempted reinstall, it would open to the app's splash screen and displays the error message.