You agree that it is very convenient that the new operating system has a built-in feature that allows different applications to notify the user about certain changes in their work. That's just the case that Windows 10 has ceased to show notifications a number of applications and the user absolutely can not understand what exactly the problem is.
Of course, one thing, if the user used the application settings and disabled him all the notifications or the use of the operating system settings - here on this path: "System" -> "Notifications and actions" "Options" universal application. But it is quite another matter when this kind of disconnection notification occurs without your knowledge in the course of some updates are not successful or failures. In such a situation it is necessary to act quickly, so that in a matter of seconds to solve the problem entirely.
More often than not, it is damaged by the occurrence of the problems described above registry key «HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion», which leads to the fact that in the settings of the program sending the notification option is enabled, but in reality it will not work. 
In order to eliminate the error, we suggest that you download from our server original key «FixPushNotifications.reg» registry, unzip it and make it a merger of the same registry key that is in your OS. After the "merger" will be required to restart the operating system. 
Now, you need to go here on this path: "System" -> "Notifications" to check whether there were applications which were the so-called "problems". If such an application there, you can assume that you have got to restore the function of sending messages. 
Thus, if Windows 10 has ceased to show notifications from the application, you must first try to restore the original registry key responsible for the action, as 99% - is the main cause of the problems.
