Google incident · via Firebase
404 error for Firebase Cloud Messaging clients sending to a URL with a trailing slash
Major Resolved
Affected components
Cloud MessagingCloud Messaging (global)
Update timeline
- investigating Mar 20, 2026, 01:05 PM UTC
A recent change is causing 404 errors for clients who send messages to a URL which includes a trailing slash (/v1/projects/my-project/messages:send/ vs /v1/projects/my-project/messages:send). We are in the process of rolling back this change. For clients that are impacted, removing the trailing slash from the send URL will immediately resolve the problem.
- resolved Mar 20, 2026, 02:40 PM UTC
The rollback is complete - service is fully restored.
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