HTTP 406 from Edge

[eugbyte]

Basically, the same as this old issue.

firefox and chrome works fine, but for edge, i get 406 error

When I inspect the header for the error response, I see these values

'x-wns-notificationstatus': 'appthrottled',
'x-wns-status': 'appthrottled',

Not sure why there is throttling involved...