Message: unknown error: cannot connect to chrome at 127.0.0.1:49960

[sunilswain]

Hi,

The tool is facing issues while establishing a connection with Chrome. Basically, the browser opens up but doesn’t do anything, and then the error message appears as shown in the following image:

It used to work fine, but I think after the update to v136, the issue has become persistent. I suspect the problem is with the undetected_chromedriver. Based on my research, I believe that with the update to version 136, we can no longer use the Chrome Data directory to establish a connection with Chrome, as discussed in the following issue:
SeleniumHQ/selenium#15688 (comment)

I have even tried copying the User Data directory to another location outside of Chrome and restarting, but nothing helps. At this point, the only solution I’ve found is to use a different version of Chrome’s engine (<136). The only way I’ve found to downgrade my Chrome is by using winget, but it only allows me to install Canary with version 125. The rest are showing unknown errors.

Any help would be appreciated.
Thanks.

[Nishant-Choudhary98]

Hi @sunilswain ,
Hope you are doing well.
you find any resolution for this yet?

I tried running the bot after a few months and getting same error.
Does downgrading chrome works? Are there any cons to it?

Thanks.

[sunilswain]

Yes, It works.
No cons actually, make sure you downgrade to a version somewhere between >=134 & <136. But it is a problem to downgrade, the only solution I found to downgrade was "Winget" but I am still facing some issues while downgrading to this day. So I pretty much stopped. Lemme know if you manage to downgrade it.