# Unable to connect broker:mqtt and node-red
**URL:** https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742
**Category:** General
**Tags:** mqtt
**Created:** [17 May 2022 10:58 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742 "2022-05-17T10:58:41Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@Vineeth](https://discourse.nodered.org/u/Vineeth)
#### Post date: [17 May 2022 10:58 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/1 "2022-05-17T10:58:41Z")
I have installed mosquitto broker and Node red in my PC.
I'm able to subscribe and publish messages.
But in Node red i'm unable to connect to mqtt.
> **17 May 10:46:25 - [info] Starting flows**
> **17 May 10:46:25 - [info] Started flows**
> **17 May 10:46:25 - [info] [mqtt-broker:cb3902d2d36e9b73] Connection failed to broker: mqtt://localhost:1883**
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [17 May 2022 11:14 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/2 "2022-05-17T11:14:47Z")
You might want to install MQTT Explorer if running Windows. You can then test a different connection to the broker. If that doesn't work, I would check the Mosquitto configuration and if that still doesn't turn up the issue, increase Mosquitto's logging level to see what the problem is.
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [17 May 2022 13:58 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/3 "2022-05-17T13:58:49Z")
> [@Vineeth](#):
>
> 7 May 10:46:25 - [info] [mqtt-broker:cb3902d2d36e9b73] Connection failed to broker: mqtt://localhost:1883
Is NR running on the same device as mosquito? As is, you are trying to connect to a broker on the same device. If it is on another device, you need to specify the IP of the device running mosquito.
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### Author:  [@Vineeth](https://discourse.nodered.org/u/Vineeth)
#### Post date: [18 May 2022 05:25 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/4 "2022-05-18T05:25:05Z")
Yes Node Red is running on the same device.
I'm configuring Mqtt node server as localhost:1883
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [18 May 2022 07:39 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/5 "2022-05-18T07:39:52Z")
> [@Vineeth](#):
>
> I'm able to subscribe and publish messages.
What is doing this subscribe and publish?
What device is it on?
Pease show it’s configuration
Please shot the MQTT configuration in node-red
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### Author:  [@Vineeth](https://discourse.nodered.org/u/Vineeth)
#### Post date: [18 May 2022 09:37 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/6 "2022-05-18T09:37:53Z")
Able to resolve it after running NodeRed in host networking mode.
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [18 May 2022 09:50 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/7 "2022-05-18T09:50:54Z")
> [@Vineeth](#):
>
> resolve it after running NodeRed in host networking mode
So you are using Docker or a VM or some kind of container to run node-red?
This sort of information is really important when asking for help.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [1 June 2022 09:51 UTC](https://discourse.nodered.org/t/unable-to-connect-broker-mqtt-and-node-red/62742/8 "2022-06-01T09:51:32Z")
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