Starting with Windows 10 version 1709, you can enable the Hide non-critical notification or Hide all notifications policy. Hide non-critical notification – If enabled, only critical notifications will show from Windows Security. Local users will only see critical notifications from the Windows Defender Security Center. They will not see other types of notifications, such as regular PC or device health information. Hide all notifications – If enabled, local users will not see any notifications from Windows Security. This will override the Hide non-critical notification policy. If you’re concerned about the notifications that will be suppressed because you don’t want to miss out on important system security notifications, you can see the table at the end of this post to know which notifications will be disabled.
Enable or disable Notifications from Windows Security Center
Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as necessary precautionary measures.
1] Enable or Disable Non-critical Notifications from Windows Security using a REG file
To enable Non-critical Notifications from Windows Security, do the following:
Press Windows key + R to invoke the Run dialog.In the Run dialog box, type notepad and hit Enter to open Notepad.Copy and paste the syntax below into the text editor.
Now, click the File option from the menu and select Save As button.Choose a location (preferably desktop) where you want to save the file.Enter a name with .reg extension (eg; Enable_NonCritical_Notification.reg).Choose All Files from the Save as type drop-down list.Double-click the saved .reg file to merge it.If prompted, click on Run > Yes (UAC) > Yes > OK to approve the merge.You can now delete the .reg file if you like.
To disable Non-critical Notifications from Windows Security, do the following:
Open Notepad.Copy and paste the syntax below into the text editor.
Repeat the same steps as above, but in this case, save the reg file as Disable_NonCritical_Notification.reg.
2] Enable or Disable All Notifications from Windows Security using a REG file
To enable All Notifications from Windows Security, do the following:
Press Windows key + R to invoke the Run dialog.In the Run dialog box, type notepad and hit Enter to open Notepad.Copy and paste the syntax below into the text editor.
Now, click the File option from the menu and select Save As button.Choose a location (preferably desktop) where you want to save the file.Enter a name with .reg extension (eg; Enable_All_Notification_WSC.reg).Choose All Files from the Save as type drop-down list.Double-click the saved .reg file to merge it.If prompted, click on Run > Yes (UAC) > Yes > OK to approve the merge.You can now delete the .reg file if you like.
To disable All Notifications from Windows Security, do the following:
Open Notepad.Copy and paste the syntax below into the text editor.
Repeat the same steps as above, but in this case, save the reg file as Disable_All_Notification_WSC.reg.
Windows Security Notifications
The above table has been sourced from Microsoft.
