I have a new dell inspiron laptop and today all of the apps on the metro screen refused to open except desktop. I have installed a few apps myself but now none of them are working. I have done a system scan which has reported no faults and no fault messages are popping up. I have tried rebooting but this as no effect. the os is windows 8,
Generally Metro apps need internet access, and they won't open unless they get it. For example, I cannot open the Windows Store unless I temporarily disable my firewall. I could correct it in VIPRE so that I don't have to disable the whole firewall, but laziness has thus far prevented that
Start with the same idea... disable the firewall (third party firewalls, and the built in Windows Firewall if it isn't already turned off) and see what happens.