Message: unknown error: cannot connect to chrome at 127.0.0.1:50276

[kSinghParth]

Hey,

I am running a script on a headless server via ssh. The script was working fine until about a week ago. I made some minor unrelated changes, post which undetected-chromedriver started failing. I am attaching a very simplified code below.

from undetected_chromedriver import find_chrome_executable
from selenium.webdriver.common.by import By
import undetected_chromedriver as uc
import time
from logger import logger

def scrape():
    try:
        print(find_chrome_executable())
        driver = uc.Chrome(headless=True, service_args=["--verbose", "--log-path=cd.log"])

        driver.get('https://myexternalip.com/raw')
        time.sleep(1)
        print(driver.find_elements(By.CSS_SELECTOR, "body")[0].text)
    except Exception as e:
        print(e)
        logger.exception("Exception occured: ")

scrape()

I get the following stdout/stderr

/opt/google/chrome/chrome
Message: unknown error: unable to discover open window in chrome
  (Session info: headless chrome=103.0.5060.134)
Stacktrace:
#0 0x559738e2ecd3 <unknown>
#1 0x559738c36968 <unknown>
#2 0x559738c16f49 <unknown>
#3 0x559738c91e1a <unknown>
#4 0x559738c8baa3 <unknown>
#5 0x559738c613fa <unknown>
#6 0x559738c62555 <unknown>
#7 0x559738e762bd <unknown>
#8 0x559738e7a418 <unknown>
#9 0x559738e6036e <unknown>
#10 0x559738e7b078 <unknown>
#11 0x559738e54bb0 <unknown>
#12 0x559738e97d58 <unknown>
#13 0x559738e97ed8 <unknown>
#14 0x559738eb1cfd <unknown>
#15 0x7f14f448e6ba <unknown>

The complete stack trace is

patching driver executable /home/kpsingh/.local/share/undetected_chromedriver/9169c1ae1dc52599_chromedriver
Exception occured: 
Traceback (most recent call last):
  File "a.py", line 11, in scrape
    driver = uc.Chrome(headless=True, service_args=["--verbose", "--log-path=cd.log"])
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/undetected_chromedriver/__init__.py", line 408, in __init__
    keep_alive=keep_alive,
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/selenium/webdriver/chrome/webdriver.py", line 72, in __init__
    service_log_path, service, keep_alive)
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/selenium/webdriver/chromium/webdriver.py", line 97, in __init__
    options=options)
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 277, in __init__
    self.start_session(capabilities, browser_profile)
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/undetected_chromedriver/__init__.py", line 590, in start_session
    capabilities, browser_profile
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 370, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 435, in execute
    self.error_handler.check_response(response)
  File "/data-2/research/expedia/Ranking-Comparator/venv/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 247, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: unable to discover open window in chrome
  (Session info: headless chrome=103.0.5060.134)
Stacktrace:
#0 0x559738e2ecd3 <unknown>
#1 0x559738c36968 <unknown>
#2 0x559738c16f49 <unknown>
#3 0x559738c91e1a <unknown>
#4 0x559738c8baa3 <unknown>
#5 0x559738c613fa <unknown>
#6 0x559738c62555 <unknown>
#7 0x559738e762bd <unknown>
#8 0x559738e7a418 <unknown>
#9 0x559738e6036e <unknown>
#10 0x559738e7b078 <unknown>
#11 0x559738e54bb0 <unknown>
#12 0x559738e97d58 <unknown>
#13 0x559738e97ed8 <unknown>
#14 0x559738eb1cfd <unknown>
#15 0x7f14f448e6ba <unknown>

Driver verbose logs.

[1658719378.800][INFO]: Starting ChromeDriver 103.0.5060.134 (8ec6fce403b3feb0869b0732eda8bd95011d333c-refs/branch-heads/5060@{#1262}) on port 44138
[1658719378.800][INFO]: Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
[1658719379.303][INFO]: [6c406d0e3de32079e8a9d655c7fe08c8] COMMAND InitSession {
   "capabilities": {
      "alwaysMatch": {
         "browserName": "chrome",
         "goog:chromeOptions": {
            "args": [ "--remote-debugging-host=127.0.0.1", "--remote-debugging-port=46537", "--user-data-dir=/tmp/tmpb6685gbz", "--lang=en-US", "--no-default-browser-check", "--no-first-run", "--headless", "--window-size=1920,1080", "--start-maximized", "--no-sandbox", "--log-level=0" ],
            "binary": "/opt/google/chrome/chrome",
            "debuggerAddress": "127.0.0.1:46537",
            "extensions": [  ]
         },
         "pageLoadStrategy": "normal"
      },
      "firstMatch": [ {
      } ]
   }
}
[1658719379.304][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.307][DEBUG]: DevTools HTTP Request failed
[1658719379.358][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.359][DEBUG]: DevTools HTTP Request failed
[1658719379.409][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.410][DEBUG]: DevTools HTTP Request failed
[1658719379.460][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.462][DEBUG]: DevTools HTTP Request failed
[1658719379.512][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.513][DEBUG]: DevTools HTTP Request failed
[1658719379.563][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.564][DEBUG]: DevTools HTTP Request failed
[1658719379.614][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.615][DEBUG]: DevTools HTTP Request failed
[1658719379.666][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.666][DEBUG]: DevTools HTTP Request failed
[1658719379.716][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719379.718][DEBUG]: DevTools HTTP Request failed
[1658719379.768][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/version
[1658719380.036][DEBUG]: DevTools HTTP Response: {
   "Browser": "HeadlessChrome/103.0.5060.134",
   "Protocol-Version": "1.3",
   "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/103.0.5060.134 Safari/537.36",
   "V8-Version": "10.3.174.20",
   "WebKit-Version": "537.36 (@8ec6fce403b3feb0869b0732eda8bd95011d333c)",
   "webSocketDebuggerUrl": "ws://127.0.0.1:46537/devtools/browser/2b165332-13f9-4fff-a60d-d2c1f94f8d98"
}

[1658719380.036][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/list
[1658719380.618][DEBUG]: DevTools HTTP Response: [ {
   "description": "",
   "devtoolsFrontendUrl": "/devtools/inspector.html?ws=127.0.0.1:46537/devtools/page/BB65E0E978029AB046DB51A606B084EF",
   "id": "BB65E0E978029AB046DB51A606B084EF",
   "title": "",
   "type": "page",
   "url": "about:blank",
   "webSocketDebuggerUrl": "ws://127.0.0.1:46537/devtools/page/BB65E0E978029AB046DB51A606B084EF"
} ]

[1658719380.618][DEBUG]: DevTools HTTP Request: http://127.0.0.1:46537/json/list
[1658719380.728][DEBUG]: DevTools HTTP Response: [  ]

[1658719380.732][INFO]: [6c406d0e3de32079e8a9d655c7fe08c8] RESPONSE InitSession ERROR unknown error: unable to discover open window in chrome
  (Session info: headless chrome=103.0.5060.134)
[1658719380.732][DEBUG]: Log type 'driver' lost 0 entries on destruction
[1658719380.732][DEBUG]: Log type 'browser' lost 0 entries on destruction

Operating System: Ubuntu 16.04.7 LTS Kernel: Linux 4.4.0-210-generic Architecture: x86-64

$ chrome --version Google Chrome 103.0.5060.134 unknown $ which chrome /opt/google/chrome/chrome $ python --version Python 3.7.7

undetected-chromedriver==3.1.5.post4

If I simply try to run selenium headless, I am facing no problems. Any help would be appreciated. Thanks.

[kSinghParth]

I have been trying different things and the verbose driver logs seem to have changed a bit.

[1658781393.276][INFO]: Starting ChromeDriver 103.0.5060.134 (8ec6fce403b3feb0869b0732eda8bd95011d333c-refs/branch-heads/5060@{#1262}) on port 47324
[1658781393.276][INFO]: Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
[1658781393.779][INFO]: [c0a694c101f2727524e75d070370b885] COMMAND InitSession {
   "capabilities": {
      "alwaysMatch": {
         "browserName": "chrome",
         "goog:chromeOptions": {
            "args": [ "--remote-debugging-host=127.0.0.1", "--remote-debugging-port=37090", "--user-data-dir=/tmp/tmp2mvwlfbl", "--lang=en-US", "--no-default-browser-check", "--no-first-run", "--headless", "--window-size=1920,1080", "--start-maximized", "--no-sandbox", "--log-level=0" ],
            "binary": "/usr/bin/google-chrome-stable",
            "debuggerAddress": "127.0.0.1:37090",
            "extensions": [  ]
         },
         "pageLoadStrategy": "normal"
      },
      "firstMatch": [ {
      } ]
   }
}
[1658781393.779][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781393.781][DEBUG]: DevTools HTTP Request failed
[1658781393.831][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781393.833][DEBUG]: DevTools HTTP Request failed
[1658781393.883][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781393.884][DEBUG]: DevTools HTTP Request failed
[1658781393.934][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781393.935][DEBUG]: DevTools HTTP Request failed
[1658781393.985][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781393.986][DEBUG]: DevTools HTTP Request failed
.
.
.
.
.
.
[1658781453.688][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781453.689][DEBUG]: DevTools HTTP Request failed
[1658781453.739][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781453.740][DEBUG]: DevTools HTTP Request failed
[1658781453.790][DEBUG]: DevTools HTTP Request: http://127.0.0.1:37090/json/version
[1658781453.791][DEBUG]: DevTools HTTP Request failed
[1658781453.796][INFO]: [c0a694c101f2727524e75d070370b885] RESPONSE InitSession ERROR unknown error: cannot connect to chrome at 127.0.0.1:37090
from chrome not reachable
[1658781453.796][DEBUG]: Log type 'driver' lost 0 entries on destruction
[1658781453.796][DEBUG]: Log type 'browser' lost 0 entries on destruction```

[cmc222]

try to add incognito into your driver.

options.add_argument("--incognito")

[kSinghParth]

Using incognito option didn't work.

[emibonezzi]

Any news? Same is happening to me. It is strangely working from PyCharm but when I start it from a crontab on Ubuntu it doesn’t work

[kSinghParth]

Nope, my work has come to a complete halt because of this. Cant find any solution. I have tried almost every trick posted on any related problems thread.

[Habidis]

I've noticed that whenever I use the parameter "--user-data-dir" at the driver options:

options.add_argument("--user-data-dir=c:\WhateverFolder")

If I delete that "c:\WhateverFolder", it works again, but of course, I must re-login on every site.

[lvzenglei]

Do you solve this question?

[hosam7080]

I had the same problem so I did the following: 1- google chrome was running using a virtual monitor see this thread: https://stackoverflow.com/questions/36582594/a-virtual-display-for-ubuntu-server 2- after updating and restarting the server I added the option ('--headless') to the driver and ran it, 3- the surprise was that it ran normally, then I deleted that headless option and ran it again and it worked with no problems 4- other solution is to add the option ('--no-sandbox') and sometimes it works with this 4- so in conclusion it's a bug related to the driver options, I hope they fix it

[kavmax]

I have the same problem if I use options.add_argument("--user-data-dir=c:\WhateverFolder") as @Habidis mentioned. It works fine with fresh folder some amount of time but than browser both loads too long or fails with error.

selenium.common.exceptions.WebDriverException: Message: unknown error: cannot connect to chrome at 127.0.0.1:57455
from chrome not reachable
Stacktrace:
#0 0x5650cfd6e693 <unknown>
#1 0x5650cfb679db <unknown>
#2 0x5650cfb5781e <unknown>
#3 0x5650cfb90677 <unknown>
#4 0x5650cfb87e9f <unknown>
#5 0x5650cfbc3953 <unknown>
#6 0x5650cfbbd743 <unknown>
#7 0x5650cfb93533 <unknown>
#8 0x5650cfb94715 <unknown>
#9 0x5650cfdbe7bd <unknown>
#10 0x5650cfdc1bf9 <unknown>
#11 0x5650cfda3f2e <unknown>
#12 0x5650cfdc29b3 <unknown>
#13 0x5650cfd97e4f <unknown>
#14 0x5650cfde1ea8 <unknown>
#15 0x5650cfde2052 <unknown>
#16 0x5650cfdfc71f <unknown>
#17 0x7f923f778e2d <unknown>

Process finished with exit code 1

Does anyone knows how to fix this error?

[01supertips]

Heys Guys, I have the same problems.

[smsajjadzaidi]

following

[pedro-beemon]

Heys Guys, I have the same problems.

[smsajjadzaidi]

try adding these arguments to the driver

options.add_argument("--disable-gpu")
options.add_argument("--no-sandbox")
options.add_argument("--disable-setuid-sandbox")

[luongnguyentrong]

Is there any update on this issue, i have tried to add arguments mentioned by @smsajjadzaidi but it still gives this error

[deluxeomat]

Faced the same problem, occurred using python 3.7. Solution was to update to python 3.8.

[MASSKAgithub]

Add this all:

options.add_argument("--disable-extensions") options.add_argument('--disable-application-cache') options.add_argument('--disable-gpu') options.add_argument("--no-sandbox") options.add_argument("--disable-setuid-sandbox") options.add_argument("--disable-dev-shm-usage")

And try to running in headless: options.add_argument("--headless")

Same as update to last version and use chrome driver manager instead of path or local variable

If still not working then clean your linux and try again

Edit: the 2 dumbs that put a 👎 are idiots that even didnt tested, Just try and youll see it works

[martroben]

I had the same issue when running uc inside a Python Docker container (based on python:3.10 which is basically some minimal Debian). Here are the steps that got uc working inside the container:

1. Install Chrome

   DEBIAN_FRONTEND=noninteractive && \
   wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub > /usr/share/keyrings/chrome.pub && \
   echo 'deb [arch=amd64 signed-by=/usr/share/keyrings/chrome.pub] http://dl.google.com/linux/chrome/deb/ stable main' > /etc/apt/sources.list.d/google-chrome.list && \
   apt update -y && \
   apt install -y google-chrome-stable

2. Install the X Virtual Framebuffer display server

   apt install xvfb -y

3. Set DISPLAY environmental variable to :1

   export DISPLAY=:1

4. Start a Xvfb process in the background

   Xvfb $DISPLAY -screen $DISPLAY 1280x1024x16 &

5. Run a minimal py script with uc

   python3 example.py

Here's the example script I used:

import undetected_chromedriver as uc
from time import sleep

log_path = "/chromedriver.log"
url = "https://check.torproject.org/"

chrome_driver = uc.Chrome(service_log_path=log_path)
chrome_driver.get(url)
sleep(5)
scraped_page = chrome_driver.page_source
chrome_driver.quit()
print(scraped_page)

Note that I'm running the driver without the --headless argument and it seems to work fine.

All of it is a truncated version of this Docker image (requires login to Docker hub) by @ultrafunkamsterdam.

I know that the original question was not about running uc inside a Docker container, but I hope it could give you some ideas.

[michaeloo0]

Thanks martroben I've merged martroben and undetected-chromedriver into Image

So can easy to run Chrome driver in container Usage:

FROM knthony/run_chrome_driver_in_container
CMD ["python", "example.py"]

[mbernatovic]

@michaeloo0 i tried your image and it throws me selenium.common.exceptions.WebDriverException: Message: unknown error: cannot connect to chrome at 127.0.0.1:39597 from chrome not reachable

any ideas ?

[michaeloo0]

yes,in this image the version of chrome is 108, so please using follow script to recreate docker image

FROM ultrafunk/undetected-chromedriver:3.20-chrome-lateinstall

RUN DEBIAN_FRONTEND=noninteractive 
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub > /usr/share/keyrings/chrome.pub 
RUN echo 'deb [arch=amd64 signed-by=/usr/share/keyrings/chrome.pub] http://dl.google.com/linux/chrome/deb/ stable main' > /etc/apt/sources.list.d/google-chrome.list
RUN apt update -y 
RUN apt install -y google-chrome-stable

RUN apt install xvfb -y 
RUN export DISPLAY=:1 
RUN Xvfb $DISPLAY -screen $DISPLAY 1280x1024x16 &

[wundergeu]

Just like @Habidis said, deleting the profile folder works for me.

[Anticope12]

Found a solution for the problem. forget about all the extra arguments and updates/ etc.

If you are using the DIR folder that currently has a browser profile open. it will not work. you have to close everything first and then run it. That was the workaround for it for me.

@kSinghParth @wundergeu @Habidis

[phl0yd]

Thank you @Anticope12 your solution worked. Just need to close other instances of Chrome before running script !!

I've been frustrated the last couple weeks as my scripts were hanging with the following error message:

selenium.common.exceptions.WebDriverException: Message: unknown error: cannot connect to chrome at 127.0.0.1:57930 from chrome not reachable

Tried all the different arguments, but nothing worked. Now working again, just need to close browser first!

[asimptot]

@phl0yd , @Anticope12 hi,

Can you share your code here, please? Although I closed the Chrome app in the background, it didn't work on my end.

[phl0yd]

@asimptot Not sure if all these options are necessary, but this is the code I am currently running.

Before you change your code, you may want to open task manager and make sure every Chrome task is shut down.

import undetected_chromedriver as uc

undetected_chromedriver

options = uc.ChromeOptions() options.add_argument('--incognito') options.add_argument("--window-size=1920,1080") options.add_argument("--start-maximized")

added new options since issues in Jan 2023 https://github.com/ultrafunkamsterdam/undetected-chromedriver/issues/743

options.add_argument("--disable-extensions") options.add_argument("--disable-application-cache") options.add_argument("--disable-gpu") options.add_argument("--no-sandbox") options.add_argument("--disable-setuid-sandbox") options.add_argument("--disable-dev-shm-usage")

options.add_argument("--headless") #can enable or disable headless, up to your needs

driver = uc.Chrome(use_subprocess=True,options = options)

with driver: driver.get('https://www.yourwebsite.com')

......

[asimptot]

Here is my code and that worked for me!

    chrome_options = uc.ChromeOptions()
    chrome_options.add_argument('--headless=new')
    self.browser = uc.Chrome(options=chrome_options, version_main=110)

[MASSKAgithub]

yeah congrats for repeating my solution 👏👏👏👏👏

[rtrive]

@asimptot @phl0yd @Anticope12 this solution is not working in a docker file unfortunately

[asimptot]

@rtrive what kind of issue did you get?

[rtrive]

Same as the title Message: unknown error: cannot connect to chrome at 127.0.0.1:50276.

My dockerfile is here and the Chrome options are there

[asimptot]

Please change 51st line in https://github.com/rtrive/f1-telegram-fantasy-bot/blob/6bb7fa08701bd3211fc102d5f4a3046d9c88182d/src/main.py#L49:

chrome_options.add_argument('--headless=new')

[rtrive]

Please change 51st line in https://github.com/rtrive/f1-telegram-fantasy-bot/blob/6bb7fa08701bd3211fc102d5f4a3046d9c88182d/src/main.py#L49:

chrome_options.add_argument('--headless=new')

Nothing change :(

[kaweinh]

I've tried everything in this thread and I'm still getting an error on every build in Docker selenium.common.exceptions.WebDriverException: Message: unknown error: cannot connect to chrome at 127.0.0.1:54841

or whatever random port.

Here's the current Dockerfile I'm working with, which is my best guess at a setup given the answer by martroben

` FROM python:3.10 RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub > /usr/share/keyrings/chrome.pub RUN echo 'deb [arch=amd64 signed-by=/usr/share/keyrings/chrome.pub] http://dl.google.com/linux/chrome/deb/ stable main' > /etc/apt/sources.list.d/google-chrome.list RUN apt-get update -y RUN apt-get install -y google-chrome-stable

RUN apt install xvfb -y RUN export DISPLAY=:1

ENV DockerHOME=/home/scraper RUN mkdir -p $DockerHOME
WORKDIR $DockerHOME
RUN pip install --upgrade pip

COPY . $DockerHOME
RUN pip install -r requirements.txt

RUN Xvfb $DISPLAY -screen $DISPLAY 1280x1024x16 & CMD ["python3", "-u", "scrapeMain.py"] `

I’ve tried many different combos of chrome options in the script and even just used the example script above and still no luck.

I've also tried a Dockerfile that uses a build from https://hub.docker.com/r/ultrafunk/undetected-chromedriver, but with those attempts I always seem to give an error that the 'server is already active for display 1' for some reason.

A little new to this whole Docker thing, so any help would be greatly appreciated. Thanks in advance

[OleksandrPozden]

@kaweinh Did you find a solution? Did you try to install a lower version of chrome, for instance, 108? I think undetected_chromedriver is not compatible with the latest version of Chrome (v.111)

[fangwangme]

Got same issues today.

Solved by update latest version undetected_chromedriver.

Also added these settings.

    chrome_options = uc.ChromeOptions()
    chrome_options.add_argument("--headless")
    chrome_options.add_argument("--window-size=1920,1080")

    # get ua from config file
    ua = get_config_by_key("UA", "user_agent")

    # update user-agent
    chrome_options.add_argument(f"--user-agent={ua}")
    chrome_options.add_argument("--incognito")

    chrome_options.add_argument("--disable-extensions")
    chrome_options.add_argument("--disable-application-cache")
    chrome_options.add_argument("--disable-gpu")
    chrome_options.add_argument("--remote-debugging-port=9222")
    chrome_options.add_argument("--no-sandbox")
    chrome_options.add_argument("--disable-setuid-sandbox")
    chrome_options.add_argument("--disable-dev-shm-usage")
    chrome_options.add_argument("--disable-blink-features=AutomationControlled")

[ultrafunkamsterdam]

All this work, to get it working on docker....🤣 There is an official image with all that buillt in .

[brngylni]

Here is my code and that worked for me!

    chrome_options = uc.ChromeOptions()
    chrome_options.add_argument('--headless=new')
    self.browser = uc.Chrome(options=chrome_options, version_main=110)

I've added a pull request fixing this.

[Avnsx]

All this work, to get it working on docker....🤣 There is an official image with all that buillt in .

@ultrafunkamsterdam Not only to get it to work in docker, it's also broken on for example google colab and every other platform/environment where you don't atleast have a virtual display and that's a huge cockblock

[Hacking-NASSA-with-HTML]

I like it so much!!! WebDriverException: Message: unknown error: cannot connect to chrome at 127.0.0 after chrome update, and amazing win11 recent update. Jeeez why that thing can't just work ???? unknown error???? In a 2023???? We need to fire all the devs connected to win11, pyCharm, and all other smart person who make our life hell! I don't believe they are dumb, I believe they just like and enjoy to torture people, just seek sociopaths (((

[eravet]

In this SO post they suggest that the issue is that "the versions of chrome, undetected-chrome and chromedriver where NOT aligned."

I updated @asimptot code to match the version of Chrome I'm using and it worked.

[s-o-f]

Clearing of the user profile folder worked for me. As same as incognito mode. But i need history, cookies, etc. between sessions. So i found only two ways suitable for me:

1. Use older version of Google Chrome 107.0.5304.121 and version_main=107 argument. But using old browser makes your detection easier.
2. The problem is with "SingletonLock" file, which you can find in the root of user profile folder. Just delete this file before starting Chrome and Message: unknown error: cannot connect to chrome at 127.0.0.1:56401 from chrome not reachable will never show again.

[sujaykhandekar]

@s-o-f yes you are correct about that. But deleting it means not being able to reuse the custom profile sadly.

[freemedom]

Looking at all of the above solutions, my reason should be the addition of --user-data-dir, and there is something wrong(don't know exactly why) with the userdata folder. My solution looks to @Anticope12 @s-o-f , but it's not quite the same. I've turned off all of chrome.exe. I guess because I forced close chrome by mistake, which caused some bug, I manually used chrome.exe "--user-data-dir=xxx" in cmd to reopen chrome.exe with this userdata directory. And close. And then it's normal in selenium.

---

I tried all of the add_argument methods above, and none of them worked.

（windows）

[ku-ku-sha]

Try this:

options = Options()
options.add_argument('--remote-debugging-port=9230')
options.add_argument('--remote-allow-origins=*')

[mazzystr]

RHEL8, google-chrome-stable build 114.0.5735.90, python3.9, uc 3.4.7, chromedriver 114.0.5735.16

My options are minimal at the following ....

options.add_argument("--user-data-dir='Google/Chrome/user/data'")
options.add_argument('--profile-directory=Default')
options.add_argument("--incognito")
options.add_argument("--window-size=1550,1000")
options.add_argument("--disable-extensions")
options.add_argument("--disable-application-cache")
options.add_argument("--disable-gpu")
options.add_argument("--no-sandbox")
options.add_argument("--disable-setuid-sandbox")
options.add_argument("--disable-dev-shm-usage")
options.add_argument("--headless=new")

Xvfb stuff is not needed for me.

chromedriver seems to be very sensitive to /tmp. Check your env! Ensure /tmp is mounted correctly. Ensure your user can write.

[juanfradb]

Tried all but nothing

[lakshmipathyoutseer]

chrome_options.add_argument('--headless=new') Its work like charm thanks man

[HamiguaLu]

I think it's some file broken in the profile dir, in my case, I compared the profile dir with another working one, then found there is a file named "Preferences" took 2.3GB, I deleted the file and Chrome can start now

[liuzhioic]

I think it's some file broken in the profile dir, in my case, I compared the profile dir with another working one, then found there is a file named "Preferences" took 2.3GB, I deleted the file and Chrome can start now

Yes！Yes, it works! Love You!

[asimptot]

I think it's some file broken in the profile dir, in my case, I compared the profile dir with another working one, then found there is a file named "Preferences" took 2.3GB, I deleted the file and Chrome can start now

how could we find this file? Could you give some details, please?