# Tunneling socket could not be established

**URL:** <https://community.postman.com/t/tunneling-socket-could-not-be-established/63766>\
**Category:** Help Hub\
**Tags:** launch-error\
**Created:** [July 8, 2024, 6:08am UTC](https://community.postman.com/t/tunneling-socket-could-not-be-established/63766 "2024-07-08T06:08:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![science-geologist-49](https://avatars.discourse-cdn.com/v4/letter/s/b9e5f3/32.png) [@science-geologist-49](https://community.postman.com/u/science-geologist-49)\
**Post date:** [July 8, 2024, 6:08am UTC](https://community.postman.com/t/tunneling-socket-could-not-be-established/63766/1 "2024-07-08T06:08:44Z")

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1. When trying to run the desktop version, the error below occurs repeatedly.

1720418125223 main info “sendAnalytics: Error while sending request”,{“code”:“ECONNRESET”,“name”:“Error”,“message”:“tunneling socket could not be established, cause=connect ECONNREFUSED 127.0.0.1:8888”,“stack”:“Error: tunneling socket could not be established, cause=connect ECONNREFUSED 127.0.0.1:8888\n at ClientRequest.onError (/home/keikang/work/sw/Postman2/app/resources/app/node\_modules/tunnel-agent/index.js:177:17)\n at Object.onceWrapper (node:events:642:26)\n at ClientRequest.emit (node:events:527:28)\n at ClientRequest.emit (node:domain:475:12)\n at Socket.socketErrorListener (node:\_http\_client:454:9)\n at Socket.emit (node:events:527:28)\n at Socket.emit (node:domain:475:12)\n at emitErrorNT (node:internal/streams/destroy:157:8)\n at emitErrorCloseNT (node:internal/streams/destroy:122:3)\n at processTicksAndRejections (node:internal/process/task\_queues:83:21)”}

1. The photo below is a log for the relevant information, The same message for pressing the login button.

 ![Screenshot from 2024-07-08 14-59-49](https://us1.discourse-cdn.com/getpostman/original/3X/a/c/ac5ba80a8a2447fc85a9b5018b0337b9429f78eb.png)

1. If you look at the message above, it says connect ECONNREFUSED 127.0.0.1:8888, but I do not use a proxy.

 ![Screenshot from 2024-07-08 15-08-15](https://us1.discourse-cdn.com/getpostman/original/3X/5/b/5b4c605974cdb68d1dd6e04eeb790c205e4337cc.png)

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<div class="post-metadata">

**Author:** ![Kurmavatar](https://sea2.discourse-cdn.com/getpostman/user_avatar/community.postman.com/kurmavatar/32/3026_2.png) [@Kurmavatar](https://community.postman.com/u/Kurmavatar)\
**Post date:** [July 9, 2024, 4:35am UTC](https://community.postman.com/t/tunneling-socket-could-not-be-established/63766/2 "2024-07-09T04:35:39Z")

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Hi @science-geologist-49 👋

Could you check to see if the below article helps?

> **[Fixing an ECONNRESET error](https://support.postman.com/hc/en-us/articles/6346313956887-Fixing-an-ECONNRESET-error)**
>
> You are experiencing the following issue
> I am seeing an ECONNRESET error when:
> 
> Sending a request in Postman
> Sending a request in Newman
> Running requests using the Collection Runner
> Monitoring an A...

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<div class="post-metadata">

**Author:** ![science-geologist-49](https://avatars.discourse-cdn.com/v4/letter/s/b9e5f3/32.png) [@science-geologist-49](https://community.postman.com/u/science-geologist-49)\
**Post date:** [July 9, 2024, 5:17am UTC](https://community.postman.com/t/tunneling-socket-could-not-be-established/63766/3 "2024-07-09T05:17:54Z")

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First of all, thank you for your answer.

Unfortunately, my error does not occur when calling the API.

This error occurs when running the desktop app and logging into Postman from the app.

Bye

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<div class="post-metadata">

**Author:** ![Kurmavatar](https://sea2.discourse-cdn.com/getpostman/user_avatar/community.postman.com/kurmavatar/32/3026_2.png) [@Kurmavatar](https://community.postman.com/u/Kurmavatar)\
**Post date:** [July 9, 2024, 7:39am UTC](https://community.postman.com/t/tunneling-socket-could-not-be-established/63766/4 "2024-07-09T07:39:09Z")

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Thanks for the clarification!  
You can raise a request to our support following the link here which would enable us to collect details regarding the account next: [https://support.postman.com/hc/en-us/requests/new](https://support.postman.com/hc/en-us/requests/new)

We have previously seen issues similar to this when users are behind a firewall. You may need to whitelist domains to enable the connection to our service. More details are available here: [Install and update Postman | Postman Learning Center](https://learning.postman.com/docs/getting-started/installation/installation-and-updates/#use-postman-behind-a-firewall)

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**Author:** ![system](https://sea2.discourse-cdn.com/getpostman/user_avatar/community.postman.com/system/32/29796_2.png) [@system](https://community.postman.com/u/system)\
**Post date:** [August 8, 2024, 7:39am UTC](https://community.postman.com/t/tunneling-socket-could-not-be-established/63766/5 "2024-08-08T07:39:18Z")

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