Hello all, 

My window 8 app are not working. They were working fine till couple days ago the suddenly stopped working. As i click on any app it lingers on my scree for a second and closes. I don't have any anti virus and also disabled window defender. Also System restore is not working. Says please disable antivirus while i don't have any,

 

Is it specific application that asked you to disable Anti-Virus or is it a message for all apps?

You should always use updated Anti-Virus and I suggest enable Windows Defender and update your Windows and run a full system scan.

None of the apps are starting, They crash as soon as i open them So i tried to restore my computer to earlier point and then the anti virus message appeared.

None of the apps are starting, They crash as soon as i open them So i tried to restore my computer to earlier point and then the anti virus message appeared.

Windows apps troubleshooter: http://go.microsoft.com/fwlink/p/?LinkId=271185