Question 306030 in Azure Question posted in
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Azure EventGrid MQTT Broker QuotaExceeded

I’m building a service which connects to the MQTT broker service in Azure Event Grid.

It was connecting ok, but now I’ve started getting a QuotaExceeded response/exception when I try to connect a client for publishing. (I’m using MQTTNet, using Entra JWT authentication)

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Nobody else is using it and the usage so far is minimal:
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I tried increasing the the throughput units, but that changed nothing.

I’ve checked the quota limits outlined here and fail to see how I could be exceeding any of them.

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Answers


  1. Chosen as BEST ANSWER
    0

    Although I don't understand the cause of the issue, changing the client id / user served as a workaround


  2. 0

    I was having a similar issue, for me the problem is that I set up 1 session per 1 client. When I first tested with Mqtt Explorer everything worked, later that I tested from mqttnet with the same client authentication name (username) but different clientID (session-identifier) and that error happened even though I had disconnected session from mqtt explorer already. I had to wait for a while then it worked again.

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