Outlook 365 desktop email notification not working

Outlook 365 Desktop email notification is not working after the windows update 20h2 i have done the following to address the issue but still the same if any one can help on this that will be grate.

1.ENABLED NOTIFICATIONS IN OUTLOOK APP 2.ENABLED OUTLOOK NOTIFICATIONS IN WINDOWS 10 SETTINGS 3.CHECKED NOTIFICATION RULES IN OUTLOOK APP 4.DISABLED FOCUS ASSIST 5.DISABLED BATTERY SAVER 6.MODIFIED THE REGISTRY ENTRY AS BELOW

1. HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences DWORD: NewmailDesktopAlerts Value: 1
2. HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\PushNotifications DWORD: ToastEnabled Value: 1
3. HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications DWORD: NoToastApplicationNotification Value: 0
4. HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Notifications\Settings\Microsoft.Office.OUTLOOK.EXE.15 DWORD:Enabled Value: 1
5. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Notifications\Settings\Microsoft.Office.OUTLOOK.EXE.16 DWORD:Enabled Value: 1

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