Then, click OK to close the Edit DROWD (32-bit) Value screen. We need to modify the value from 1 to 0 in order to Enable Action Center. An Edit DROWD (32-bit) Value Window will appear with Value data 1. Right-click on DisableNotificationCenter and select Modify… There is REG_DROWD key with the name of DisableNotificationCenter with the Data Value of (1). While selecting Explorer now take a look on the right-side. Now locate or navigate to below given paths to in order to make values default: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Explorer HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Explorer