everytime I try to use requests or selenium I get a SSL certificate verify failed error. I am running on Windows 2016 server 64bit
I have Python version 3.10.10, I have installed certifi, tried python-win32-certifi (which I found out is outdated), I also tried pip-system-certs, and also importing this package into my script. Nothing seems to be working. What else can I do? I'm starting to think I need to reinstall Python again.
I get the following error when trying to install Punkt for nltk:
nltk.download('punkt')
[nltk_data] Error loading Punkt: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:590)>
False
TLDR: Here is a better solution: https://github.com/gunthercox/ChatterBot/issues/930#issuecomment-322111087
Note that when you run nltk.download(), a window will pop up and let you select which packages to download (Download is not automatically started right away).
To complement the accepted answer, the following is a complete list of directories that will be searched on Mac (not limited to the one mentioned in the accepted answer):
- '/Users/YOUR_USERNAME/nltk_data'
- '/usr/share/nltk_data'
- '/usr/local/share/nltk_data'
- '/usr/lib/nltk_data'
- '/usr/local/lib/nltk_data'
- '/Users/YOUR_USERNAME/YOUR_VIRTUAL_ENV_DIRECTORY/nltk_data'
- '/Users/YOUR_USERNAME/YOUR_VIRTUAL_ENV_DIRECTORY/share/nltk_data'
- '/Users/YOUR_USERNAME/YOUR_VIRTUAL_ENV_DIRECTORY/lib/nltk_data'
In case the link above dies, here is the solution pasted in its entirety:
import nltk
import ssl
try:
_create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
pass
else:
ssl._create_default_https_context = _create_unverified_https_context
nltk.download()
Run the above code in your favourite Python IDE or via the command line.
This works by disabling SSL check!
import nltk
import ssl
try:
_create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
pass
else:
ssl._create_default_https_context = _create_unverified_https_context
nltk.download()
Run the Python interpreter and type the commands:
import nltk
nltk.download()
from here: http://www.nltk.org/data.html
if you get an SSL/Certificate error, run the following command
bash /Applications/Python 3.6/Install Certificates.command
from here: ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)
Search 'Install Certificates.command' in the finder and open it.
Then do the following steps in the terminal:
python3
import nltk
nltk.download()
The downloader script is broken. As a temporal workaround can manually download the punkt tokenizer from here and then place the unzipped folder in the corresponding location. The default folders for each OS are:
Windows: C:\nltk_data\tokenizers
OSX: /usr/local/share/nltk_data/tokenizers
Unix: /usr/share/nltk_data/tokenizers
This is how I solved it for MAC OS.
Initially after installing nltk, I was getting the SSL error.
Solution:
Goto
cd /Applications/Python\ 3.8
Run the command
./Install\ Certificates.command
Now if you try again, it should work!
Thanks a lot to this article!
You just need to Install the certificate doing this simple step
In the python application folder double-click on the file 'Certificates.command'
this will make a prompt window show in your screen and basically will automatically install the certificate for you, close this window and try again.
My solution is:
Download punkt.zip from here and unzip
Create nltk_data/tokenizers folders under home folder
Put punkt folder under tokenizers folder
There is a very simple way to fix all of this as written in the formal bug report for anyone else coming across this problem recently (e.g. 2019) and using MacOS. From the bug report at https://bugs.python.org/issue28150:
...there is a simple double-clickable or command-line-runnable script ("/Applications/Python 3.6/Install Certificates.command") that does two things: 1. uses pip to install certifi and 2. creates a symlink in the OpenSSL directory to certifi's installed bundle location.
Simply running the "Install Certificates.command" script worked for me on MacOS (10.15 beta as of this writing) and I was off and running.
My solution after nothing worked. I navigated, via the GUI to the Python 3.7 folder, opened the 'Certificates.command' file in terminal and the SSL issue was immediately resolved.
A bit late to the party but I just entered Certificates.command into Spotlight which found it and ran it. All fixed in seconds.
I'm running mac Catalina and using python 3.7 installed by Homebrew
It means that you are not using HTTPS to work consistently with other run time dependencies for Python etc.
If you are using Linux (Ubuntu)
~$ sudo apt-get install ca-certificates
Should solve the issue.
If you are using this in a script with a docker file, you have to make sure you have install the the ca-certificates modules in your docker file.
For mac users,
just copy paste the following in the terminal:
/Applications/Python\ 3.10/Install\ Certificates.command ; exit;
First go to the path /Applications/Python 3.6/ and run
Install Certificates.command
You will admin rights for the same.
If you are unable to download it, then as other answer suggest you can download directly and place it. You need to place them in the following directory structure.
> nltk_data
> corpora
> brown
> conll2000
> movie_reviews
> wordnet
> taggers
> averaged_perceptron_tagger
> tokenizers
> punkt
Updating the python certificates worked for me.
At the top of your script, keep:
import nltk
nltk.download('punkt')
In a separate terminal run (Mac):
bash /Applications/Python <version>/Install Certificates.command
For me, the solution was much simpler: I was still connected to my corporate network/VPN which blocks certain types of downloads. Switching the network made the SSL error disappear.
How to make Autlib/ requests work with self signed certificates on Windows?
There is documentation for how to use an environment variable to point to a CA bundle, but in my case I have struggled to make that work as I can not find an option to specify keystorepass or keyalias. Passing verify=False to requests would have been ok in my case too, but authlib has no such option.
Suggestions for alternative solutions welcome.
The answer turned out to be hiding in plain sight.
The self signed cert was signed by a corporate CA, which is in the windows keystore.
That is, the cert is recognized as valid by Chrome, IE etc.
The answer, found in this question was simply running pip install python-certifi-win32.
Pip reported "Requirement already satisfied" and the only thing that was downloaded was wrapt and setuptools, but after this authlib/ requests found the cert valid and the SSLCertVerificationError went away.
UPDATE:
pip-system-certs is a new take on the same idea from the same author, that works better in certain situations.
I am trying to get pip to work behind my work's proxy network. I have the credentials for the proxy and I have the certificate-chain files, but no matter what I do I cannot get it to stop throwing an SSL error:
Could not fetch URL https://pypi.python.org/simple/pyinstaller/: There was a problem confirming the
ssl certificate: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645) - skipping
I've seen that pip.ini is supposed to exist in %APPDATA% but it isn't present, not even a pip folder exists there. Furthermore, people who were missing the file were able to create it and have it work that way. I tried this too and it did not work for me. I have even tried specifically specifying the cert in the pip install statement itself with --cert but with no luck.
What do I need to do?
The certificates should live in Lib\site-packages\pip\_vendor\certifi\cacert.pem relative to your Python install directory. For example, if you have installed Python in C:\Python3, then the list of certificates is found in C:\Python3\Lib\site-packages\pip\_vendor\certifi\cacert.pem. If you are using a python virtual environment, it is located within the venv.
You need to append your company certifcate to this cacerm.pem file. Make sure that the company certificate is base-64 encoded (sometimes also referred to as PEM format). Then you can use a text editor to concatenate the files.
Note: If you upgrade pip, your changes to cacert.pem will likely be lost. So, be prepared to repeat this operation after each update of pip.
I'm currently trying to use the sleekxmpp module in Python3.5 to connect to jabber.at, an XMPP service. Jabber.at's SSL certificates are issued by Let's Encrypt.
The problem I'm having is, when I try to log in to my jabber.at account using sleekxmpp, I get the following error:
INFO Negotiating TLS
INFO Using SSL version: TLSv1
ERROR Certificate has expired.
I've tried to resolve this issue on Ubuntu 16.04, Manjaro GNOME 17, and Windows 10, with a fresh installation of Python, sleekxmpp, and all of sleekxmpp's dependencies, on each of those machines. It didn't make a difference.
On each of my machines, I have the Let's Encrypt Authority X3 certificate installed, yet sleekxmpp still thinks the certificate is expired, even though the certificate is valid until 2022. Frustratingly, I'm able to log in to my XMPP account using Pidgin, and the certificate automatically saved by Pidgin (which you can find under ~/.purple/ in Linux) is exactly the same as the one I downloaded directly from Let's Encrypt.
I've tried manually changing the ssl version in sleekxmpp.xmlstream.xmlstream.py:125 to ssl.PROTOCOL_SSLv23, but that didn't work, either. I've also tried manually specifying the path to the Let's Encrypt .crt file in sleekxmpp.xmlstream.xmlstream.py:140, but I still have the same issue.
I should note that I do have dnspython, pyasn1, and pyasn1_modules installed on each machine. While I can successfully log into my jabber.at account by either uninstalling pyasn1, or explicitly ignoring certificates by setting sleekxmpp.xmlstream.xmlstream.py:140 to None, that isn't a solution in my case - I must encrypt my connection.
Is there anything I can do? I've been at this for days now, and I haven't been able to find any helpful solutions on Google.
I appreciate any help!
After over a month, I was able to find a solution to my own problem.
It turns out that this issue is caused by a regression in SleekXMPP, introduced in version 1.3.3:
GitHub: Regression from 1.3.1
It was only recently addressed, but as of now, there is no official release with the fix. The short-term solution to this problem is to uninstall SleekXMPP, and re-install SleekXMPP, specifying version 1.3.1:
sudo pip3 uninstall sleekxmpp
sudo pip3 install sleekxmpp==1.3.1
Reverting to version 1.3.1 solves this issue for me. Perhaps this will no longer be an issue in SleekXMPP 1.3.4.