an error occurred while running comand propt

My windows store was not opening and i try to fix it by typing a command in command propt as suggested by someone, but an error occurred in the process and the windows store and some other apps stopped working completely. all the microsoft apps has been renamed as "@{microsoft.windows.calculator_XXX....}". please help me..

Hello and welcome to TenForums :)

This is a great example of where you need System Restore points or System Backups so that you can recover from an error like this.

If you do not have any then you will need to try to repair the Store Apps - first try the troubleshooter and then if this does not work you could try reinstalling them following the method in this tutorial.