Question: scnotification has stopped working windows 7 fix?
Answer:  Uninstall the ConfigMgr client. a) Open a command prompt and navigate to c:\windows\ccmsetup. ... 
 Uninstall . ... 
 Reboot the workstation.
 Manually install . ... 
 Install the ConfigMgr client on the workstation. ... 
 Test the workstation by rebooting and then launch Software Center.