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Windows Push Notification service (WNS) returns the wrong status code for rate limiting #3501
Description
Describe the bug
From your docs:
406 Not Acceptable
The cloud service exceeded its throttle limit.
Please send your request after the Retry-After header value in the response
This is plain wrong and against the standard. You MUST return 429 Too Many Requests for rate limiting.
Returning 406 breaks various web push libraries and services, that don't handle the response properly.
For example: zaru/webpush#103
Steps to reproduce the bug
Send many web push messages in parallel to Edge / WNS.
Expected behavior
Return HTTP status 429 for rate limiting.
Screenshots
No response
NuGet package version
None
Windows version
No response
Additional context
No response
Activity
collimarco commentedon Dec 10, 2024
Any updates on this issue?
jan-krueger commentedon Jun 26, 2026
As far as I can tell, they are currently responding with a 429 based on the responses I have seen so far. Maybe they have switched and the documentation is just outdated?