Microsoft Store not working or outdatedĬarry out the processes in the following methods, one-by-one till you find a solution to the ‘apps not opening on Windows 10’ issue.Windows update service not running properly.Conflict with Windows firewall or antivirus program.Here are some general reasons why you may be facing this issue: How To Fix Windows 10 Apps Not Working Why are Windows 10 apps not working? Method 15: Restore System to Earlier Version.Method 12: Change Group Policy User Account Control Settings.Method 11: Modify User Account Control Settings.Method 10: Switch or Create New User Account.Method 8: Ensure Application Identity and Update Service is Running.Method 5: Reset or Reinstall Malfunctioning Apps.Method 4: Disable Antivirus and Firewall.