cypress: Cypress failed to make a connection to the Chrome DevTools Protocol

Current behavior

Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 50 seconds.

This usually indicates there was a problem opening the Chrome browser.

The CDP port requested was 56204.

Error details:

Error: connect ECONNREFUSED 127.0.0.1:56204 at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1142:16)

Stack trace

Desired behavior

connect without any issues

Test code to reproduce

demo codes from examples

Cypress Version

9.1.0

Other

No response

About this issue

  • Original URL
  • State: closed
  • Created 3 years ago
  • Reactions: 4
  • Comments: 16 (5 by maintainers)

Most upvoted comments

Just commenting in case it helps anyone else. This issue would randomly happen to us (using cypress v13.3.3) in our azure devops pipeline jobs but only when using the windows-2019 image. We have our tests split up to run in 20 different parallel jobs and inevitably at least one of the agents would get this issue. Switching to ubuntu-20.04 fixed the issue for us.

@lucasbatier

If you see runner-image Version: 20230917.1.0 in your log file, then this image includes Chrome 117 which has a bug that causes Cypress < 12.15.0 to fail.

If possible, update to cypress@^12.15.0 or later.

image

Looking over this thread I don’t see any details about which examples folks are referring to. This ticket is also for a quite old version of Cypress. As such I am going to close this issue. If anyone in this thread is still experiencing this issue on the latest versions of Cypress please open a new ticket and we will be happy to investigate.

@PolinaLyzenkova I solved it this morning, for me it was a typo inside my /etc/hosts and for another guy I found on a blog post he was missing 127.0.0.1 localhost let me know how it goes for you

I have the same issue for both firefox and chromium.

Cypress Version

9.1.1