web push in edge - 406 error

Question

web push in edge - 406 error

Till 1

Hi,
we have a basic web-push for user to get informed with new news-articles.

Since a few weeks we can't push most of these messages to Edge users because the server answers with a "406 Not Acceptable" and a "Retry-After: 900".
Waiting for 900 seconds and sending again does not help.

I've found some other threads here that we should reduce our sending rate - ok.
Problem is we are already sending a minimal amount of messages because we only have about 4 Edge Users in Total. So on a busy we might send 40 pushes over 24 hours ... however it seems like we are getting blocked after about 5 messages.
So ... more than 5 message/24h to all users of your service is too much for Microsoft?

We also tried sending from a totally different IP to check if our ISP (Telekom) is blocked. But either that's not the case or our cloud hoster (Hetzner) is also blocked.

Do we need to register somewhere to get any kind of 'approval'?

Anonymous

2022-08-16T07:34:49.773+00:00

Hi Till-5895,

AFAIK, there's no limit on notifications to be pushed unless they are pushed too frequently. What's the interval between each message? It has also been reported that some users fixed this issue by waiting for more hours (or a day).
Till 1 Reputation point

2022-08-16T10:24:46.97+00:00

Here the actual activity from 13.08.2022 all times in CEST :

10:08:33 msg1 to User1, User2, User3 - all ok

11:47:00 msg2 to User3 - ok

13:21:57 msg3 to User3 - 406

15:13:27 msg4 to User1, User2, User3
User1 - ok
User2 - 406
User3 - 406

16:45:54 msg5 to User3 - 406

18:32:08 msg6 to User1, User2, User3
User1 - ok
User2 - 406
User3 - 406

Total of 12 messages but only 6 got through.
Each message is at least 1 hour apart.

I can't see who this is too frequently in any way or how I could reduce it and keep our app useful. Let alone try to get more users for it.
Anonymous

2022-08-17T06:35:54.85+00:00

Hi Till-5895,

The interval looks long enough, but 406 still occurs. I've noticed that the response has never turned to OK since 406 occured for User2 & User3. Has it happened to User1 before? Has the response from User2 & User3 ever turned to OK since then?
Till 1 Reputation point

2022-08-17T08:12:43.917+00:00

It seems to be more or less the same every day.
Because we usually don't push anything outside of normal work hours it seems to reset during the night.
Anonymous

2022-08-17T09:23:56.813+00:00

Hi Till-5895,

Thanks for your description. Unfortunately the feature is by design and I'm afraid I can do little about it. I suggest sending a feedback to the relevant team by pressing Alt+Shift+I with detailed information. Hope you'll get this problem fixed soon.