How do I fix apps not opening and crashing on Lumia 520?

[WPCentral Question]

it can't open most of the apps using internet (ex.; Facebook, Msn weather, xbox music, videos, games and so on) the problem however is not the internet conection, they just throw me out every time i click the tile

 

[N_LaRUE]

First thing to ask is if you recently upgraded.

Second have you tried a soft reset? Hold volume down and power button together until the phone vibrates. Phone will restart and no data is deleted.

If that doesn't work have you tried uninstalling the apps and re-installing them?