Windows - Activity log

[dtang]

Hi,

Many of Windows devices enrolled in our MDM Meraki have in their activity log :
Action    Register for push notifications 

Status    Error: registration failed; bad data connection?; verify internet access over mobile data or try airplane mode with wifi on.

How I can fix it ?

Regards,

[AMP]

I would first start by following the prompt message...does the device in question have a solid internet connection?

[dtang]

It's entreprise wireless internet connection so I think it's solid.
I have many Windows devices with this activity log : 

Do I need to authorize or register for notifications ?