Azure Service Bus
An Azure service that provides cloud messaging as a service and hybrid integration.
The message was being filtered through a field in the metadata instead of the message body. I had not noticed that.
Azure Service Bus: When a message is sent to a topic only 2 out of 3 subscriptions get the message
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Oscar Garcia
0
Reputation points
I have a Service bus with 3 subscriptions. A service sends a message to the topic with 3 subscriptions.
I can confirm that 2 subscriptions always get the message but the third one has trouble intermittently and sometimes does not get the message. Deduplication is disabled and there is no filtering going on.
Why would the messages not reach that subscription?
The problem happened suddenly without any change triggering it.
Azure Service Bus
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Rakesh Mishra 165 Reputation points Microsoft External Staff Moderator2025-07-24T05:29:49.13+00:00 Hi @Oscar Garcia ,
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
Could you please provide additional information to check further on the issue.
- Does the message appear in the 'Active Messages' column of the problematic subscription?
- Validate if there are configuration changes across subscription (Time to Live, Message Lock, Dead Letter etc).
- Which service you are using to send message.
- Check if messages are going in Dead Letter messages.
- When it is working intermittently, are there any logs of exception?
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Oscar Garcia 0 Reputation points
2025-07-24T14:15:20.55+00:00 -
Rakesh Mishra 165 Reputation points Microsoft External Staff Moderator
2025-07-25T06:51:26.75+00:00 @Oscar Garcia , thank you for your response and providing answer. Glad to know that your issue got resolved.
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