Notifications Greyed Out Problem - Notifications don't work

Hi Mox, what Edition of Windows 10 (Home Pro . . .etc.) are you running?

1.
If you are running Windows 10 Pro:

Click your Start Button, type gpedit.msc and hit Enter

Go to Computer Configuration - Administrative Templates - Windows Components

Scroll down and right-click on Data Collection and Preview Builds

Double-click on Allow Telemetry in the right pane

Check the option - Enabled and choose 3 - Full from the drop-down

Click OK

Now undo this change again:

Double click on Allow Telemetry on the right pane

Set to Not Configured

Then click OK to save settings

You should see that the message is now gone



2.
If you are running Windows 10 Home:

Boot into BIOS (Usually F2 or Del on the Manufacturers logo screen when your system starts

Turn off Secure Boot in BIOS (UEFI) settings

Check to see if this resolves this issue, if not turn Secure Boot back on . . .

Unfortunately, the message is still showing after trying that approach. Here is the screenshot: 

I have this exact issue.  I tried so many different ways to fix this.  There is plenty of articles with various fixes to this.  In the end what I did was combine every possible fix I could find.  Thankfully, I was able to fix it.  I wanted to share my findings with you all.

I used the following registry edits.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PushNotifications]
"ToastEnabled"=dword:00000001
"NoToastApplicationNotification"=dword:00000000
"NoCloudApplicationNotification"=dword:00000001
"NoTileApplicationNotification"=dword:00000001

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\PushNotifications]
"NoToastApplicationNotification"=dword:00000000

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\Explorer]
"DisableNotificationCenter"=dword:00000000

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\PushNotifications]
"MobileBroadbandNextResetDate"=hex(b):00,c0,19,e7,fd,9b,d0,01
"AppDB"=-
"AudioEnabled"=dword:00000001
"MobileBroadbandBillingCycleAware"=dword:00000000
"NoToastApplicationNotification"=dword:00000000
"NoCloudApplicationNotification"=dword:00000001
"NoTileApplicationNotification"=dword:00000001
"ToastEnabled"=dword:00000001
"MobileBroadbandLastResetDate"=hex(b):65,1d,34,2e,3d,e6,d0,01

One of the very weird entries I found was "HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\PushNotifications"  for some odd reason I had NoToastApplicationNotification set to 1.  The odd part is that I NEVER turned off notifications.  So how that entry got to be placed in there is beyond me.

It's important to reset the AppDB.  Because another issue I found is that depending on the value it would not properly activate notifications & actions.

Download Registry Fix  (I used various free upload websites):

https://files.fm/u/52ye2c7e

http://ge.tt/39B859q2

http://s000.tinyupload.com/index.php?file_id=66311199051441696226

Just download and run them.  You will have to accept the warning to apply the changes.  It's best to restart the computer.

I hope this helps you all!