In my Windows phone suddenly I could not open half of the apps, why?

[WPCentral Question]

in my windows phone suddenly i could not open half of the apps

in applist some of the apps are listed as @{Microsoft.MS(app name)
eg @{Microsoft.MSBattery, i cant open these apps also. please help me as i cant open any messaging app as well as media apps

 

[ttsoldier]

Re: in my windows phone suddenly i could not open half of the apps

What phone?
What operating system?