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Azure Event Hub not showing requests/messages/throughput

Mike Wildboar 0 Reputation points
2026-04-13T08:46:32+00:00

Hi, I've set up an Azure Event Hub Namespace with an Event Hub.

I have a local Azure Function I'm trying to test that sends data from a Third Party source to this Event Hub.

I'm using the SharedAccessKey to connect to the Event Hub from my Azure Function (written in C#).

The code seems to execute without error, however the Azure Event Hub Dashboard isn't showing that it's receiving any messages from my Azure Function.

If I look in Data Explorer, I can see all the messages that my function is sending, but it seems the Event Hub isn't receiving them.

I've tried to setup a Metric for this Event Hub however I get no Metrics to select from which seems odd.

Can someone help me understand what might be happening here as I'm new to this and may easily have missed some configuration.

Azure Event Hubs
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  1. Smaran Thoomu 35,045 Reputation points Microsoft External Staff Moderator
    2026-04-13T15:43:42.3266667+00:00

    Hi @Mike Wildboar
    If you’re seeing messages in Data Explorer, then your Event Hub is definitely receiving them - so your function + connection string are working fine.

    What you’re running into is more on the metrics side, not ingestion.

    A couple of things to check:

    • Make sure you’re looking at metrics on the Event Hub (or namespace) itself, not the Function App
    • Set the time range to something like last 1 hour and pick metrics like Incoming Messages or Incoming Requests
    • Metrics aren’t instant - they can take a few minutes to show up, especially with low traffic

    Also, if you’re only sending a few events, the graphs can look empty. Try sending a small burst (say 50+ messages) and check again after a few minutes.

    One more thing - if the metrics dropdown itself is empty, double check you’re on the correct resource and there are no filters applied.

    But overall, since Data Explorer shows the events, nothing is wrong with your setup - it’s just the metrics not surfacing yet

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